Statutory Inspectors General in the Federal Government: A Primer
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Statutory Inspectors General in the Federal
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Updated August 11, 2026
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R45450
SUMMARY
Statutory Inspectors General in the Federal
Government: A Primer
This report provides an overview of statutory inspectors general (IGs) in the federal government,
including their structure and functions, as well as related issues for Congress.
R45450
August 11, 2026
Ben Wilhelm
Analyst in Government
Organization and
Management
Statutory IGs—established by law rather than administrative directive—are intended to be
independent, nonpartisan officials who aim to prevent and detect waste, fraud, and abuse in the
federal government. To execute their missions, IGs lead offices of inspectors general (OIGs) that
conduct various reviews of agency programs and operations—including audits, investigations,
inspections, and evaluations—and provide findings and recommendations to improve them. IGs possess several authorities to
carry out their respective missions, such as the ability to independently hire staff, access relevant agency records and
information, and report findings and recommendations directly to Congress.
A total of 70 statutory IGs currently operate across the
federal government. Statutory IGs can be grouped into
three types: (1) establishment, (2) designated federal entity
(DFE), or (3) other permanent. A fourth class, special IGs,
have been common in recent decades, but none are
currently operating. Establishment (33) and DFE (30) IGs
are governed by the Inspector General Act of 1978, as
amended, whereas other permanent IGs (7) are governed by separate statutes. Statutory authorities and requirements can
differ among the three IG types, resulting in varied levels of independence, transparency, and accountability. This report also
discusses special IGs, which are created by Congress to provide oversight regarding a particular issue for a limited time.
Statutory IGs are central actors on government oversight, and Congress plays a key role in establishing the structures and
authorities to enable that oversight. The structure and placement of IGs in government agencies allows OIG personnel to
develop the expertise necessary to conduct in-depth assessments of agency programs. Further, IGs’ dual reporting structure—
to agency heads and to Congress—positions them to advise agencies on how to improve their programs and policies and to
advise Congress on how to monitor and facilitate such improvement. Congress, therefore, may have an interest in ensuring
that IGs possess the resources and authorities necessary to fulfill their statutory duties.
As the federal government continues to evolve, so too does the role of IGs in government oversight. Agency programs and
operations have increased in terms of breadth, complexity, and interconnectedness. Consequently, IGs may face increasing
demand to complete statutorily mandated reviews of programs and operations that require (1) a broader focus on program
performance and effectiveness in addition to waste, fraud, and abuse; (2) analysis of specialty or technical programs, possibly
in emerging policy areas; and (3) use of more complex analytical methods and tools. Congress may consider several options
regarding IG structures, functions, and coordination as the role of IGs in government oversight evolves.
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Statutory Inspectors General in the Federal Government: A Primer
Contents
Establishment of Statutory IGs ........................................................................................................ 1
Brief History of Statutory IGs Until 1978 ................................................................................. 1
Inspector General Act of 1978 .................................................................................................. 2
Central Tenets of the IG Act ............................................................................................... 2
Evolution of the IG Act ....................................................................................................... 2
Structure of the IG Community ....................................................................................................... 4
Types of IGs .............................................................................................................................. 4
Composition of Statutory IGs ................................................................................................... 5
Distribution of IGs Across Federal Entities .............................................................................. 5
Types of IG Reviews ....................................................................................................................... 7
Quality Standards ...................................................................................................................... 8
Type of Analysis ........................................................................................................................ 9
Scope of Analysis ...................................................................................................................... 9
IG Statutory Authorities and Requirements................................................................................... 10
Oversight Jurisdiction ..............................................................................................................11
Appointment Method ...............................................................................................................11
Removal Method ..................................................................................................................... 12
Acting IGs ............................................................................................................................... 13
Term Limits ............................................................................................................................. 14
Transparency of Budget Formulation and Proposals .............................................................. 14
Appropriations......................................................................................................................... 15
Reporting Requirements.......................................................................................................... 16
Semiannual Report ............................................................................................................ 16
Seven-Day Letter .............................................................................................................. 16
Top Management and Performance Challenges ................................................................ 17
Transparency of IG Reports and Recommendations ............................................................... 17
Oversight.gov .......................................................................................................................... 18
Coordination and Oversight of Statutory IGs ................................................................................ 19
Council of the Inspectors General on Integrity and Efficiency ............................................... 19
Other Coordinating Bodies ..................................................................................................... 20
Issues for Congress ........................................................................................................................ 21
Independence........................................................................................................................... 22
Appointment and Removal Methods ................................................................................ 23
Role and Independence of CIGIE ..................................................................................... 25
The IG’s Role and Effectiveness ............................................................................................. 27
Is the Role of IGs Evolving? ............................................................................................. 27
Figures
Figure 1. Statutory IGs by Type and Authorizing Statute ............................................................... 5
Tables
Table 1. Distinguishing Characteristics of Statutory IG Types ....................................................... 4
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Table 2. Multiple Statutory IGs Affiliated with a Single Federal Entity ......................................... 6
Table 3. Examples of a Single Statutory IG Affiliated with Multiple Federal Entities ................... 7
Table 4. Key Differences Among Common Types of IG Reviews .................................................. 8
Table 5. Appointment Methods for Statutory IGs ......................................................................... 12
Table A-1. Establishment IGs ........................................................................................................ 29
Table A-2. Designated Federal Entity (DFE) IGs .......................................................................... 31
Table A-3. Other Permanent IGs ................................................................................................... 32
Table B-1. Comparison of Selected Statutory Authorities and Requirements for IGs .................. 34
Appendixes
Appendix A. Statutory Inspectors General by Type ...................................................................... 29
Appendix B. Selected Inspectors General Statutory Authorities and Requirements ..................... 33
Contacts
Author Information........................................................................................................................ 39
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Statutory Inspectors General in the Federal Government: A Primer
C
ongress created the inspectors general (IGs) to “shine a bright light on waste, fraud, and
abuse throughout the Federal bureaucracy with the hope that the executive and legislative
branches could work together to do something about those problems.”1 IGs accomplish
this mission by conducting audits and investigations, by making recommendations to agencies
that promote efficiency and effectiveness, and by both preventing and detecting fraud in agency
programs and operations. This report provides an overview of statutory IGs in the federal
government, including their structure and functions, as well as related issues for Congress.
Establishment of Statutory IGs
Statutory IGs are intended to be independent, nonpartisan officials who prevent and detect waste,
fraud, abuse, and mismanagement within federal departments and agencies. To execute their
missions, IGs lead offices of inspectors general (OIGs) that conduct audits, investigations, and
other evaluations of agency programs and operations and produce recommendations to improve
them. Statutory IGs exist in 70 federal entities, including departments, agencies, boards,
commissions, and government-sponsored enterprises.
Brief History of Statutory IGs Until 1978
The origins of modern-day IGs can be traced to the late 1950s, with the statutory establishment of
an “IG and Comptroller” for the Department of State in 1959. Soon after, in 1962, the Kennedy
Administration created an IG for the Department of Agriculture.2 Prior to the establishment of
IGs in the federal government, agencies sometimes had internal audit and investigative units to
combat waste, fraud, and abuse.3
In 1976, Congress established a statutory IG for the Department of Health, Education, and
Welfare (HEW; now the Department of Health and Human Services).4 Congressional
investigations had uncovered widespread inefficiencies and mismanagement of HEW’s programs
and operations, as well as weaknesses within the department’s audit and investigative units.5 The
House Committee on Government Operations investigative report recommended, among other
things, that the Secretary of HEW place all audit and investigation units “under the direction of a
single official who reports directly to the Secretary and has no program operating
responsibilities.”6 This official would be responsible for identifying “serious problems” and “lack
of progress in correcting such problems.”7 Congress ultimately established the HEW IG in statute
1 Sen. Chuck Grassley, “Inspectors General,” Congressional Record, daily edition, vol. 166 (June 18, 2020), p. S3088.
2 Congress established the Department of State “Inspector General and Comptroller” in 1959 (P.L. 86-108), and the
Secretary of Agriculture administratively created an inspector general (IG) in 1962. These two IGs have been described
as early prototypes for modern-day IGs. For more information on the history of IGs, see Paul Light, Monitoring
Government: Inspectors General and the Search for Accountability (Brookings Institution, 1993), pp. 23-43.
3 See, for example, U.S. Congress, House Committee on Government Operations, Subcommittee on Intergovernmental
Relations and Human Resources, Establishment of Offices of Inspectors General, hearings on H.R. 2819 and H.R.
4184, 95th Cong., 1st sess., May 17, 24; June 1, 7, 13, 21, 29; and July 25, 27, pp. 478-728.
4 P.L. 94-505, §401(h).
5 See, for example, U.S. Congress, House Committee on Government Operations, Department of Health, Education,
and Welfare (Prevention and Detection of Fraud and Program Abuse), Tenth Report, 94th Cong., 2nd sess., January 26,
1976, H.Rept. 94-786.
6 H.Rept. 94-786, p. 11.
7 H.Rept. 94-786.
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based on this model8 and included an IG in the Department of Energy when it was created in
1977.9
Inspector General Act of 1978
The establishment of the HEW and Department of Energy IGs laid the groundwork for Congress
to create additional statutory IGs through the Inspector General Act of 1978 (hereinafter IG
Act).10 According to the Senate Committee on Governmental Affairs report that accompanied the
legislation, the committee believed that extending the IG concept to more agencies would
improve government programs and operations. The committee further identified IG independence
from agency management as a key characteristic in fostering such improvements, stating that the
IG model removes “the inherent conflict of interest which exists when audit and investigative
operations are under the authority of an individual whose programs are being audited.”11
Central Tenets of the IG Act
The IG Act initially created 12 IGs for federal “establishments” and provided a blueprint for IG
authorities and responsibilities.12 The act laid out three primary purposes for IGs:
1. conducting audits and investigations of programs and operations of their
affiliated federal entities;13
2. recommending policies that promote the efficiency, economy, and effectiveness
of agency programs and operations, as well as preventing and detecting waste,
fraud, and abuse; and
3. keeping the affiliated entity head and Congress “fully and currently informed” of
fraud and “other serious problems, abuses, and deficiencies” in such programs
and operations, as well as progress in implementing related corrective actions.14
Evolution of the IG Act
Congress has substantially amended the IG Act four times since its enactment, as described
below.15 The amendments generally aimed to expand the number of statutory IGs and enhance
their independence, transparency, and accountability.
8 U.S. Congress, House Committee on Government Operations, report to accompany H.R. 15390, 94th Cong., 2nd sess.,
H.Rept. 94-1573.
9 P.L. 95-91, §208.
10 P.L. 95-452. The IG Act, as amended, is listed in 5 U.S.C. §§401 et seq., https://uscode.house.gov/view.xhtml?path=/
prelim@title5/part1/chapter4&edition=prelim.
11 U.S. Congress, Senate Committee on Governmental Affairs, report to accompany H.R. 8588, 95th Cong., 2nd sess.,
August 8, 1978, S.Rept. 95-1071, p. 7.
12 Federal “establishments” consist of Cabinet-level departments and larger agencies in the executive branch.
Establishment IGs are appointed by the President by and with the advice and consent of the Senate. This included the
establishment, by statute, of an IG for the Department of Agriculture. The State Department’s “IG and controller” was
brought into the framework of the IG Act in 1980.
13 Affiliated federal entity refers to an entity within the scope of an IG’s jurisdiction. For example, the Department of
Homeland Security and its components are considered an “affiliated federal entity” of the department’s IG.
14 5 U.S.C. §402.
15 In addition, the Homeland Security Act of 2002 vested certain offices of inspectors general (OIGs) with law
enforcement authorities, including the power to (1) carry a firearm; (2) make arrests without a warrant; and (3) seek and
execute warrants for arrest, search of premises, or seizure of evidence. See Homeland Security Act of 2002 (P.L. 107296), §812; 5 U.S.C. §406(f).
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•
•
•
•
The Inspector General Act Amendments of 1988 (P.L. 100-504) expanded the
total number of statutory IGs, particularly by authorizing additional
establishment IGs and creating a new category of IGs for “designated federal
entities” (DFEs).16 The act also established a uniform salary rate and separate
appropriations accounts for each establishment IG. Further, the act added several
new semiannual reporting requirements for IGs, such as a requirement for IGs to
provide a list of each audit report issued during the reporting period. Finally, the
law required external peer reviews of OIGs, during which a federal “audit entity”
reviews each OIG’s internal controls and compliance with audit standards.
The Inspector General Reform Act of 2008 (P.L. 110-409) established a new
entity, the Council of the Inspectors General on Integrity and Efficiency (CIGIE),
to coordinate and oversee the IG community, including an Integrity Committee to
investigate alleged IG wrongdoing. The law increased the uniform salary rate for
establishment IGs and established a salary formula for DFE IGs. The act also
provided additional authorities and protections to enhance the independence of
IGs, such as budget protections, access to independent legal counsel, and
advanced congressional notification for the removal or transfer of IGs. Finally,
the act further amended IG semiannual reporting obligations and required OIG
websites to include all completed audits and reports.
The Inspector General Empowerment Act of 2016 (P.L. 114-317) enhanced IG
access to, and use of, agency records. The act exempted IGs from the Computer
Matching and Privacy Protection Act (CMPPA)17 to allow IGs to conduct
computerized data comparisons across different agency automated record
systems without the restrictions created by the CMPPA.18 The act also directed
CIGIE to resolve jurisdictional disputes between IGs and altered the membership
structure and investigatory procedures of the CIGIE Integrity Committee.
Regarding transparency and accountability, the act required IGs to submit any
documents containing recommendations for corrective action to agency heads
and congressional committees of jurisdiction, as well as any Member of Congress
or other individuals on request.
The Securing Inspector General Independence Act of 2022 and the Integrity
Committee Transparency Act of 2022 (Title LII of P.L. 117-263, the James M.
Inhofe National Defense Authorization Act for Fiscal Year 2023) sought to
increase the independence of the IG community by placing new limits on the
removal of IGs, the management of vacancies, and the selection of acting IGs.
The act increased the information that the President and heads of DFEs must
provide to Congress prior to removal of an IG. The amendments also limited the
circumstances in which an IG may be placed on non-duty status. When a vacancy
in an IG position does occur, the act limited those who may serve as an acting IG
to certain officials within the IG community and required the President to report
to Congress if there are extended periods in which an IG position is vacant and
without a nominee. The act also increased the IG community’s transparency to
16 DFEs consist primarily of smaller entities, such as commissions, boards, and government-sponsored enterprises (e.g.,
National Science Foundation and Legal Services Corporation). DFE IGs are appointed by the affiliated entity heads.
17 The CMPPA is codified at 5 U.S.C. §552a. For more information on the CMPPA, see CRS Report R47325,
Computer Matching and Privacy Protection Act: Data Integration and Individual Rights, by Natalie R. Ortiz.
18 See 5 U.S.C. §406(j).
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Congress by altering the requirements for semiannual reports and enhancing
reporting by CIGIE’s Integrity Committee.
Structure of the IG Community
Types of IGs
Statutory IGs may be grouped into four types: (1) establishment, (2) DFE, (3) other permanent,
and (4) special.19 Federal laws explicitly define only the first two types of IGs, though
stakeholders sometimes distinguish IGs according to common criteria for all four types. This
report groups IGs into the four types following these commonly used criteria, including
authorizing statute, appointment method, affiliated federal entity and the branch of government in
which it is located, oversight jurisdiction, and oversight duration. Table 1 describes each IG type
according to these criteria. There are not any active special IGs presently, but Congress may
create new special IGs in the future.20
Table 1. Distinguishing Characteristics of Statutory IG Types
Feature
Establishment IG
Authorizing
statute
DFE IG
IG Act
Other
Permanent IG
Special IG
Individual statutes outside of the IG Act
Appointment
method
President, by and
with the advice and
consent of the
Senate
Agency head
President, by and
with the advice and
consent of Senate
or
agency head
President, by and
with the advice and
consent of Senate
or
President alone
Affiliated federal
entity
Cabinet
departments,
Cabinet-level
agencies, and larger
agencies in the
executive branch
Smaller entities (e.g.,
boards, commissions,
and governmentsponsored enterprises)
Certain intelligence
agencies within DOD
Certain legislative
branch agencies
Certain intelligence
agencies outside of
DOD
Some affiliated with
specified federal
entities; others not
expressly affiliated
with a particular
entity
Oversight
jurisdiction
Authority to oversee the programs and
operations of an affiliated entity or entities
Authority to
oversee federal
programs,
operations, or funds
as specified in
authorizing statute
Oversight
duration
Permanent (no sunset date)
Temporary (allowed
to sunset)
19 The types do not include IGs for certain U.S. Armed Forces—the Army, Air Force, and Navy. (The Department of
Homeland Security IG oversees the U.S. Coast Guard.) While these service branch IGs are required by statute, they are
distinct from IGs under the IG Act and related provisions and are not generally considered among the “statutory IGs,”
including in this report. The position of IG in the uniformed services has its own history distinct from that of the more
modern statutory IGs discussed in this report. Additionally, the categories do not include non-statutory IGs. For
example, the House of Representatives IG is authorized pursuant to House Rule II, clause 8. See CRS In Focus
IF11024, Office of the House of Representatives Inspector General, by Jacob R. Straus.
20 Special IGs that recently wound down their operations include the Special Inspector General for Pandemic Recovery
(SIGPR) and the Special Inspector General for the Troubled Asset Relief Program (SIGTARP).
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Source: CRS analysis of the Inspector General Act of 1978, as amended, and authorizing statutes for other IGs.
Note: IGs can be grouped into types other than those listed based on a different set of criteria.
Composition of Statutory IGs
As of July 2026, 70 statutory IGs operate in the federal government.21 The IG Act governs 63
IGs: 33 establishment and 30 DFE IGs. The remaining 7 IGs are governed by individual statutes
outside the IG Act (Figure 1). Five of the seven other permanent IGs operate for legislative
branch agencies—the Architect of the Capitol (AOC), Government Publishing Office (GPO),
Government Accountability Office (GAO), Library of Congress (LOC), and U.S. Capitol Police
(USCP). The remaining two operate for executive branch intelligence agencies—the Central
Intelligence Agency (CIA) and Intelligence Community (IC). Appendix A lists current statutory
IGs by type.
Figure 1. Statutory IGs by Type and Authorizing Statute
As of July 2026
Source: CRS analysis of the Inspector General Act of 1978, as amended, and authorizing statutes for other IGs.
Notes: The figure does not include IGs for certain U.S. Armed Forces—the Air Force, Army, and Navy. (The
Department of Homeland Security IG, which is included in the totals in the figure, oversees the U.S. Coast
Guard.) While these IGs exist in statute, their structure and authorities differ significantly from other statutory
IGs and are beyond the scope of this report. Further, the figure does not include non-statutory IGs, such as the
IG for the House of Representatives.
Distribution of IGs Across Federal Entities
The majority of IGs oversee the activities of a single affiliated federal entity and its components.
For example, the IG for the Department of Homeland Security (DHS) is responsible for
evaluating programs and operations of the entire department and its components, such as the
Federal Emergency Management Agency and the U.S. Coast Guard.
Two departments are affiliated with more than one IG: the Department of Defense (DOD) and the
Department of the Treasury. Both have a department-wide IG and one or more separate IGs for
certain components or programs (Table 2).
21 This number does not reflect statutory IG positions that have been abolished.
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Table 2. Multiple Statutory IGs Affiliated with a Single Federal Entity
Department of Defense (DOD) IGs
DOD (department-wide)
Defense Intelligence Agency
National Geospatial Intelligence Agency
National Security Agency
National Reconnaissance Office
Department of the Treasury (DOT) IGs
DOT (department-wide)
Treasury Inspector General for Tax Administration
(Internal Revenue Service)
Source: CRS analysis of the Inspector General Act of 1978 and other statutes governing the listed IGs.
Notes: The table does not include IGs for U.S. Armed Forces within the DOD—the Air Force, Army, and
Navy. While these military IGs exist in statute, their structure and authorities differ significantly from other
statutory IGs and are beyond the scope of this report.
Following Trump Administration action regarding the U.S. Agency for International Development
(USAID) and the administration of foreign-assistance programs, the statutorily established OIG
for the agency has continued to operate, providing oversight of the administration of funding
previously administered by USAID and now managed by the Department of State.22
Congress has authorized some IGs to oversee the programs, operations, and activities of more
than one entity either on a permanent or temporary basis. The expansion of an IG’s jurisdiction to
include multiple entities has generally stemmed from agency reorganizations or congressional
concern regarding oversight of a particular agency or program.23
Table 3 provides examples of IGs who have permanent expanded jurisdiction. In the past,
Congress has also temporarily expanded IG jurisdiction to include operations of unaffiliated
agencies. For example, Congress directed the GAO IG to serve concurrently as the IG for the
Commission on Civil Rights for FY2012 and FY2013.24 The Consolidated Appropriations Act,
2014, authorized the DOT IG to oversee the Metropolitan Washington Airports Authority
(MWAA), a nonfederal entity.25
22 The exact position and role of the USAID OIG remains uncertain pending potential congressional action on the
administration of foreign assistance programs. In the Consolidated Appropriations Act for FY2026, Congress continued
to fund the USAID OIG and reiterated its statutory jurisdiction. See USAID OIG, “Oversight Plan, FY 2026-FY 2027,
2026, https://oig.usaid.gov/sites/default/files/2026-05/USAID%20IG%20FY%20%E2%80%982627%20oversight%20plan_0.pdf.
23 A recent example of legislation that established such an arrangement is the Postal Service Reform Act of 2022 (P.L.
117-108), which abolished the OIG for the Postal Regulatory Commission and reorganized its functions into the
existing OIG for the U.S. Postal Service. See CRS Insight IN11685, Changes to Postal Regulatory Commission
Administration in the Postal Service Reform Act of 2022, by Ben Wilhelm.
24 P.L. 112-55, Division B, Title IV, 125 Stat. 628; P.L. 113-6, Division B, Title IV, 128 Stat. 266; Government
Accountability Office (GAO) OIG, Semiannual Report: April 1, 2014-September 30, 2014, OIG-15-1SP, October
2014, p. 5, https://www.gao.gov/assets/670/667257.pdf.
25 P.L. 113-76, Division L, Title I; 128 Stat. 600. It is unclear whether the IG has overseen MWAA beyond FY2015.
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Table 3. Examples of a Single Statutory IG Affiliated with Multiple Federal Entities
Office of
Inspector
General
Affiliated federal
entities
Description
Authorizing statute
and U.S. Code citation
Intelligence
Community
(IC)
IC elements (defined
in 50 U.S.C. §3003)
The IC IG is explicitly authorized to
oversee the programs and activities under
the purview of the Director of National
Intelligence (DNI), who serves as the head
of the IC. The IC IG replaced the nowdefunct IG for the Office of the DNI,
whose jurisdiction was limited to this
office and who had substantially less
authority and independence (P.L. 108-458,
§1078).
P.L. 111-259, §405
Codified in 50 U.S.C.
§3033
Board of
Governors of
the Federal
Reserve
System (FRB)
(1) FRB
(2) Consumer
Financial Protection
Bureau (CFPB)
The FRB IG is explicitly authorized to
oversee the CFPB, which resulted from
CFPB’s establishment as a new
“independent bureau” within the Federal
Reserve System in 2010 under the DoddFrank Wall Street Reform and Consumer
Protection Act.
P.L. 111-203, §§1011 and
1081
Listed in 5 U.S.C.
§415(a)(2)
Department of
Transportation
(DOT)
(1) DOT
(2) National
Transportation Safety
Board (NTSB)
The DOT IG is expressly authorized to
oversee the “financial management,
property management, and business
operations” of the NTSB. Congress
expanded the IG’s jurisdiction to cover
the NTSB in 2000 due to perceived lack
of oversight of the board.
P.L. 106-424, §12
Codified in 49 U.S.C.
§1137
Department of
State (DOS)
(1) DOS
(2) U.S. Agency for
Global Media
(USAGM)
The DOS IG’s jurisdiction was expanded
to include USAGM upon the agency’s
removal from the DOS and establishment
as an independent agency in 1998 under
the Foreign Affairs Reform and
Restructuring Act.
P.L. 105-277, Division G,
Title XIII, Chapter 3,
§1322
Listed in 22 U.S.C.
§6209a
U.S. Postal
Service (USPS)
(1) USPS
(2) Postal Regulatory
Commission
Under the Postal Service Reform Act of
2022, the USPS IG “shall function as the
Inspector General for the Postal
Regulatory Commission.”
P.L. 117-108, §209(a)
39 U.S.C. §202(e)
Source: CRS analysis of statutes authorizing or expanding the oversight jurisdiction of each listed IG.
Types of IG Reviews
IGs conduct reviews of government programs and operations. The genesis and frequency of such
reviews can vary. Common causes for IG reviews include statutory mandates, requests by
Congress or other stakeholders (e.g., the President), and self-initiation based on particular
information or concerns. IG reviews can be grouped into three broad categories: (1) performance
audits,26 (2) inspections or evaluations, and (3) investigations.27 Table 4 and the sections below
26 OIG audits can be divided into two subcategories: performance and financial. Financial audits are beyond the scope
of this report.
27 OIG investigations can be divided into two subcategories: criminal and administrative. IGs also perform other types
(continued...)
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discuss certain differences between the review types in terms of three characteristics: quality
standards, scope of analysis, and type of analysis.
Table 4. Key Differences Among Common Types of IG Reviews
Characteristic
Quality
standards
Type of analysis
Scope of
analysis
Performance Audita
Inspection or Evaluation
Generally accepted
government auditing standards
(GAGAS, also known as the
Yellow Book)b,c
Quality Standards for Inspection
and Evaluation (also known as
the Blue Book)c,d
Programmatic (compliance, efficiency and effectiveness,
internal control, prospective analysis)f
Entire agency program or
operation
Specific aspect of a program
or operation or a specific
agency facility
Investigation
Quality Standards for
Investigationsc,e
Nonprogrammatic (individual
misconduct)
Actions of a government
employee, contractor, or
grantee
Source: CRS analysis of laws, regulations, and administrative directives governing statutory IGs.
Notes: The table does not reflect all differences among audits, inspections or evaluations, and investigations. In
addition, differences in the “scope of analysis” between a performance audit and an inspection or evaluation vary
and depend on the issue being evaluated. In some cases, the scope of analysis might be similar.
a. In addition to performance audits, IGs must conduct, or hire an independent external auditor to conduct,
audits of agency financial statements (commonly referred to as a financial audit). See 31 U.S.C. §3521(e).
Financial audits are beyond the scope of this report.
b. The U.S. Government Accountability Office (GAO) issues a publication containing the GAGAS, which is
accessible at https://www.gao.gov/yellowbook/overview.
c. The Council of the Inspectors General on Integrity and Efficiency (CIGIE) issues Quality Standards for Federal
Offices of Inspectors General, known as the Silver Book, which apply to all IG reviews. The standards are
accessible at https://www.ignet.gov/sites/default/files/files/Silver%20Book%20Revision%20-%208-20-12r.pdf.
d. These CIGIE-issued standards are accessible at https://www.ignet.gov/sites/default/files/files/
QualityStandardsforInspectionandEvaluation-2020.pdf.
e. These CIGIE-issued standards are accessible at https://www.ignet.gov/sites/default/files/files/
invprg1211appi.pdf. Criminal investigations conducted by OIGs with statutory law enforcement authority
are also governed by guidelines established by the Attorney General. See U.S. Department of Justice,
“Attorney General Guidelines for Offices of Inspector General with Statutory Law Enforcement Authority,”
December 8, 2003, https://www.ignet.gov/sites/default/files/files/agleguidelines.pdf.
f.
GAO’s Yellow Book identifies and defines four categories of performance audit objectives: (1) program
effectiveness and results, (2) internal control, (3) compliance, and (4) prospective analysis. See GAO,
Government Auditing Standards: 2018 Revision, GAO-18-568G, July 2018, pp. 10-14, https://www.gao.gov/
assets/700/693136.pdf.
Quality Standards
IG reviews are governed by different quality standards. Under the IG Act, IG audits are subject to
the generally accepted government auditing standards (GAGAS) developed by GAO.28
Inspections or evaluations and investigations, by contrast, are governed by separate standards
developed by CIGIE.29 While several standards are identical or similar across the three review
of reviews outside of these three categories. For example, the U.S. Postal Service IG periodically issues white papers
on certain topics, which are accessible at
https://www.uspsoig.gov/reports?field_publication_date=&field_publication_date_1=&report_type%5B10%5D=10.
28 5 U.S.C. §404(ab)(1). For these audit standards see GAO, Government Auditing Standards (aka Yellow Book),
https://www.gao.gov/yellowbook/overview.
29 CIGIE, Quality Standards for Inspection and Evaluation (aka Blue Book), December 2020, https://www.ignet.gov/
(continued...)
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types, the requirements to meet those standards differ depending on the type of review. For
example, one GAO report noted that IG audits are “subject to more depth in the requirements for
levels of evidence and documentation supporting the findings” than IG inspections.30
IG Audits Versus Inspections or Evaluations:
Examples of Differences in the Quality Control Standard
Both IG audits and inspections or evaluations must adhere to a “quality control” standard, but the requirements
to meet the standard differ between the two types of reviews.
IG audit: GAO’s Yellow Book requires an audit organization to, among other things, (1) monitor the quality of
audits and summarize the results of the monitoring process annually and (2) identify a supervisor to manage an
audit and fulfill specific responsibilities, such as tracking the progress of the audit and reviewing work performed
by the audit team to ensure compliance with GAGAS.31
IG inspection or evaluation: CIGIE’s Blue Book does not require annual reports on quality monitoring.32
Further, the supervisory requirements for an inspection call only for “adequate supervision” that ensures that all
inspection team members understand the purpose and goals of the inspection.
Type of Analysis
IG audits and inspections or evaluations include programmatic analysis, which may involve
analyses related to the efficiency and effectiveness of agency programs and operations and
whether they are compliant with legal and administrative requirements and controls.33 In these
reviews, IGs often offer recommendations for agencies to improve those programs and
operations. IG investigations, by contrast, typically include nonprogrammatic analysis and instead
focus primarily on alleged misuse or mismanagement of an agency’s programs, operations, or
resources by an individual government employee, contractor, or grantee. Unlike audits and
inspections or evaluations, IG investigations can directly result in disciplinary actions that are
criminal (e.g., indictments and prosecutions) or administrative (e.g., monetary payments,
suspension/debarment, or termination of employment).
Scope of Analysis
Performance audits may be broader in scope compared to inspections or evaluations and
investigations. Performance audits typically assess the implementation of an entire program
across multiple agency components and facilities. An inspection or evaluation, by contrast, is
more likely to focus on a specific aspect of a program or the operations of a particular agency
facility or geographic region containing agency facilities. Investigations typically focus on the
actions of a specific agency employee, grantee, or contractor for alleged misconduct or
wrongdoing.
sites/default/files/files/QualityStandardsforInspectionandEvaluation-2020.pdf; and CIGIE, Quality Standards for
Investigations, November 15, 2011, https://www.ignet.gov/sites/default/files/files/invprg1211appi.pdf.
30 GAO, Inspectors General: Activities of the Department of State Office of Inspector General, GAO-07-138, March
2007, p. 19, https://www.gao.gov/assets/260/258069.pdf.
31 GAO, Government Auditing Standards: 2018 Revision, GAO-18-568G, July 2018, pp. 89-91, https://www.gao.gov/
assets/files.gao.gov/assets/gao-18-568g.pdf.
32 CIGIE, Quality Standards for Inspection and Evaluation, December 2020, p. 8.
33 GAO’s Yellow Book identifies and defines four categories of performance audit objectives: (1) program effectiveness
and results, (2) internal control, (3) compliance, and (4) prospective analysis. The Yellow Book further states that these
objectives can be pursued simultaneously within a single audit. See GAO, Government Auditing Standards: 2018
Revision, GAO-18-568G, July 2018, pp. 10-14, https://www.gao.gov/assets/files.gao.gov/assets/gao-18-568g.pdf.
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Example of Differences in Units of Analysis Among an IG Performance Audit,
Inspection or Evaluation, and Investigation
The Department of Veterans Affairs (VA) IG conducted several reviews of veteran wait times and access to care
that varied in scope and analysis, such as
•
an audit of veteran wait times and timely access to care at multiple VA medical facilities across one Veterans
Integrated Service Network (VISN);34
•
an inspection of veteran access to care and quality of care—including wait times—at one VA medical facility
within a specific VISN;35 and
•
an investigation of employees at one VA medical facility within a specific VISN for allegedly manipulating wait
times to meet scheduling appointment goals.36
IG Statutory Authorities and Requirements
IGs possess many authorities and responsibilities to carry out their respective missions, many of
which aim to establish and protect IG independence from undue influence. For example, the IG
Act grants covered IGs broad authority to
•
•
•
•
•
•
•
conduct audits and investigations, which cannot be prohibited or prevented by the
affiliated entity head (except, in some cases, for national security reasons);
access directly the records and information related to the affiliated entity’s
programs and operations;
request assistance from other federal, state, and local government agencies;
subpoena information and documents;
administer oaths when conducting interviews;
independently hire staff and manage their own resources; and
receive and respond to complaints of waste, fraud, and abuse from agency
employees, whose identity is to be protected.37
The subsections below and Appendix B compare selected statutory authorities and requirements
by IG type: establishment, DFE, other permanent, and special. However, the manner in which
each IG interprets and implements these authorities and responsibilities can vary widely, thus
potentially resulting in substantially different structures, operations, and activities across IGs.
The discussion in this section focuses on IG authorities and requirements that are expressly
mandated in the applicable authorizing statute.38 Although legislative branch IGs were not created
34 VA OIG, Veterans Health Administration: Audit of Veteran Wait Time Data, Choice Access, and Consult
Management in VISN 6, March 2, 2017, https://www.vaoig.gov/sites/default/files/reports/2017-03/VAOIG-16-02618424.pdf.
35 VA OIG, Healthcare Inspection – Follow-Up of Scheduling, Staffing, and Quality of Care Concerns at the Alaska
VA Healthcare System, Anchorage, Alaska, March 9, 2017, https://www.oversight.gov/reports/healthcare-inspectionfollow-scheduling-staffing-and-quality-care-concerns-alaska-va.
36 VA OIG, Administrative Summary of Investigation by the VA Office of Inspector General in Response to Allegations
Regarding Patient Wait Times: VA Medical Center in Salisbury, North Carolina, October 4, 2016,
https://www.vaoig.gov/sites/default/files/reports/2016-10/wait-times-14-02890-255.pdf.
37 5 U.S.C. §§403(a), 406(a), 406(e), and 407. Authorities and requirements may differ for IGs not explicitly covered
by the IG Act. For more information on selected IG authorities and requirements, see Appendix B.
38 Where possible, the subsections provide examples of instances in which IGs have elected to comply with a
nonmandatory provision.
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under the IG Act, their authorizing statutes incorporate—and therefore make applicable—certain
provisions of the IG Act. These “incorporation by reference” provisions are subject to some
interpretation. Even when the authorizing statute for an IG unequivocally incorporates a specific
provision of the IG Act, interpretation may vary regarding whether subsequent amendments to
that incorporated provision apply to the IGs if they occurred after the enactment of the IG’s
authorizing statute.39
Oversight Jurisdiction
As mentioned previously, establishment, DFE, and other permanent IGs generally do not have
cross-agency jurisdiction and therefore evaluate only the programs, operations, and activities of
their respective affiliated agencies. For example, the DHS IG must annually evaluate the
department’s information security programs and practices, but it does not evaluate such programs
and practices in other departments.40 Oversight jurisdiction, however, can extend to nonfederal
third parties, such as contractors and grantees. For example, the IG for the National Archives and
Records Administration audited the agency’s management of grant fund use by certain grantees. 41
Special IGs, by comparison, have sometimes possessed express cross-agency jurisdiction. They
may be authorized to evaluate a specific program, operation, or activity irrespective of the
agencies implementing them. For instance, the Special Inspector General for Afghanistan
Reconstruction’s (SIGAR’s) oversight jurisdiction included all federal funding for programs and
operations related to Afghanistan reconstruction, which involved multiple agencies. SIGAR,
therefore, performed audits on topics such as government-wide efforts to train, advise, and assist
the Afghan National Defense and Security Forces.42 The DOD IG, by contrast, may examine only
reconstruction activities under DOD’s purview, such as the military’s efforts to train, advise, and
assist the Afghan Air Force.43
Appointment Method
Statutory IGs must be appointed “without regard to political affiliation” and “on the basis of
integrity and demonstrated ability in accounting, auditing, financial analysis, law, management
39 Although an argument can be made that the incorporation by reference includes subsequent amendments to the
referenced statute, it would also appear that traditional canons of statutory interpretation may suggest that the proper
construction of the authorizing statutes is that they incorporate only the text of the referenced provisions as they existed
at the time the applicable authorizing statute was adopted. See Hassett v. Welch, 303 U.S. 303, 314 (1938), wherein the
Supreme Court stated, “Where one statute adopts the particular provisions of another by a specific and descriptive
reference to the statute or provisions adopted, the effect is the same as though the statute or provisions adopted had
been incorporated bodily into the adopting statute. … Such adoption takes the statute as it exists at the time of adoption,
and does not include subsequent additions or modifications by the statute so taken unless it does so by express intent.”
Legal interpretation of the treatment of provisions incorporated by reference are beyond the scope of this report.
40 This assessment is required by the Federal Information Security Modernization Act of 2014 (P.L. 113-283; 44 U.S.C.
§3555).
41 National Archives and Records Administration (NARA) OIG, Audit of NARA’s Oversight of Selected Grantees’ Use
of Grant Funds, February 16, 2011, https://www.archives.gov/files/oig/pdf/2011/audit-report-11-03.pdf.
42 See, for example, SIGAR, Reconstructing the Afghan National Defense and Security Forces: Lessons from the U.S.
Experience in Afghanistan, September 2017, https://www.govinfo.gov/content/pkg/GOVPUB-S-PURLgpo121786/pdf/GOVPUB-S-PURL-gpo121786.pdf.
43 DOD OIG, Progress of U.S. and Coalition Efforts to Train, Advise, and Assist the Afghan Air Force, January 4,
2018, https://media.defense.gov/2018/Jan/29/2001870851/-1/-1/1/DODIG-2018-058-REDACTED.PDF.
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analysis, public administration, or investigations.”44 Congress has used three different methods
for the appointment of statutory IGs:
1. by the President, with the advice and consent of the Senate (“PAS
appointments”);
2. by the President alone (“PA appointments”); or
3. by the head of the affiliated federal entity.
As shown in Table 5, a total of 35 of 70 statutory IGs are appointed by the President with the
advice and consent of the Senate. When SIGAR existed, the position was appointed by the
President without Senate confirmation. The other 35 of 70 IGs are appointed by the heads of their
affiliated federal entities: DFE (31) and other permanent IGs in the legislative branch (5). Unlike
other IGs, the USCP and Architect of the Capitol IGs must be appointed by their affiliated entity
heads in consultation with other permanent IGs in the legislative branch.45
Table 5. Appointment Methods for Statutory IGs
As of July 2026
President Nominates,
Senate Confirms
Agency or Entity
Head Appoints
President
Appoints
Total
Inspector General Act of
1978, as amended
33a
30b
0
63
Other statutes
2c
5d
0e
7
Total
35
35
0
70
Authorizing Statutes
Source: CRS analysis of authorizing statutes for the listed IGs. The table does not include statutory IG positions
that have been abolished.
a. Includes all establishment IGs. See 5 U.S.C. §§403 and 401(1).
b. Includes all DFE IGs. See 5 U.S.C. Appendix (IG Act), §415(c).
c. Includes the IGs for the Central Intelligence Agency, the Intelligence Community, the special IG for the
Troubled Asset Relief Program, and the Special Inspector General for Pandemic Recovery. See, respectively,
50 U.S.C. §3517(b)(1), 50 U.S.C. §3033(c)(1), 12 U.S.C. §5231(b)(1), and 15 U.S.C. §9053(b)(1).
d. Includes the IGs for the Architect of the Capitol, Government Accountability Office, Government
Publishing Office, Library of Congress, and U.S. Capitol Police. See, respectively, 2 U.S.C. §1808(c)(1)(A), 31
U.S.C. §705(b)(1), 44 U.S.C. §3902(a), 2 U.S.C. §185(c)(1)(A), and 2 U.S.C. §1909(b)(1).
e. Previously included the Special IG for Afghanistan Reconstruction. See 5 U.S.C. §415 note.
Removal Method
Congress has provided that IGs may be removed or transferred to another position under one of
two methods (by the President or by the head of the affiliated federal entity), depending on how
they were initially appointed. Establishment, special, and other permanent IGs in the executive
44 5 U.S.C. §403(a) and §415(c) (establishment and DFE IGs); 2 U.S.C. §1808(c)(1)(a) (AOC IG); 2 U.S.C.
§1909(b)(1) (USCP IG); 2 U.S.C. §185(c)(1)(a) (LOC IG); 41 U.S.C. §3902(a) (GPO IG); 31 U.S.C. §705(b)(1) (GAO
IG). The CIA IG must also be selected “on the basis of compliance with security standards of [the CIA] and prior
experience in the field of foreign intelligence” (50 U.S.C. §3517(b)(1)).
45 2 U.S.C. §1808(c)(1)(A) (AOC IG); 2 U.S.C. §1909(b)(1) (USCP IG). For a summary of appointment methods for
the five legislative branch IGs, see CRS Insight IN11763, Appointment Methods for Legislative Branch Inspectors
General, by Ben Wilhelm.
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branch are removable or transferrable by the President.46 In contrast, DFE IGs and other
permanent IGs in the legislative branch are removable or transferrable by the heads of their
affiliated entities.47 Additional procedures are required to remove or transfer certain IGs as
follows:
•
•
•
DFE IG headed by a board, committee, or commission. Removal or transfer
upon written concurrence of a two-thirds majority of the members of the board,
committee, or commission.48
U.S. Postal Service (USPS) IG. Removal upon written concurrence of at least
seven of nine postal governors and three commissioners of the Postal Regulatory
Commission and only “for cause” (e.g., malfeasance or neglect of duty).49
USCP IG. Removal upon a “unanimous vote” of all voting members on the
Capitol Police Board.50
In most cases, statute directs the President to provide advance notice to Congress of an IG’s
removal or transfer. The removal authority must communicate to both houses of Congress, in
writing, the “substantive rationale” for the IG’s removal or transfer 30 days in advance for
establishment, DFE, and special IGs—representing 63 of 70 IGs. Additionally, this notice must
include information on any “open or completed inquiry” into the IG being removed.51
Advance notice requirements for removal vary across other permanent IG positions. Authorizing
statutes for the IC and CIA IGs require advance notice, but only to the congressional intelligence
committees. Authorizing statutes for the other permanent IGs in the legislative branch do not
explicitly require advance notice and instead require written communication to Congress
explaining the reason for removal.52
Acting IGs
If an establishment IG position becomes vacant for any reason, the IG Act includes specific rules
regarding the designation of an official to serve as an acting IG. Specifically, establishment IGs
may designate, in writing, an official in their office as the “first assistant to the position of
Inspector General.” That individual automatically assumes the responsibilities of the IG on an
acting basis if the IG position becomes vacant.53 The IG Act also provides that the President may
select a different official to fulfill the duties of the IG on an acting basis so long as that individual
meets certain qualifications, including having served in an OIG office for at least 90 of the 365
46 5 U.S.C. §403(b) (establishment IGs); 50 U.S.C. §3033(c)(4) (IC IG); 50 U.S.C. §3517(b)(6) (CIA IG). Past special
IGs have also been removable by the President.
47 5 U.S.C. §415(e) (DFE IGs); 2 U.S.C. §1808(c)(2) (AOC IG); 2 U.S.C. §1909(b)(3) (USCP IG); 31 U.S.C.
§705(b)(2) (GAO IG); 44 U.S.C. §3902(b) (GPO IG); 2 U.S.C. §185(c)(2) (LOC IG).
48 5 U.S.C. §415(e)(1).
49 39 U.S.C. §202(e).
50 2 U.S.C. §1909(b)(3).
51 See 5 U.S.C. §403(b)(1)(B).
52 2 U.S.C. §1808(c)(2) (AOC IG); 31 U.S.C. §705(b)(2) (GAO IG); 44 U.S.C. §3902(b) (GPO IG); 2 U.S.C.
§185(c)(2) (LOC IG); 2 U.S.C. §1909(b)(3) (USCP IG).
53 5 U.S.C. §404(h)(2). If no “first assistant to the position of Inspector General” has been designated, then the Principal
Deputy Inspector General of the OIG assumes the duties of the IG. 2 U.S.C. §1808(c)(2) (AOC IG); 31 U.S.C.
§705(b)(2) (GAO IG); 44 U.S.C. §3902(b) (GPO IG); 2 U.S.C. §185(c)(2) (LOC IG); 2 U.S.C. §1909(b)(3) (USCP
IG).
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days before the vacancy occurred.54 The President may exercise this authority only after
providing Congress with written notice 30 days in advance.55
Term Limits
All but two statutory IGs are appointed to indefinite terms. The USPS and USCP IGs are subject
to term limits. The USPS IG is appointed to a seven-year term and can be reappointed for an
unlimited number of terms.56 The USCP IG is appointed to serve a five-year term for up to three
terms (15 years total).57 Similarly, special IG offices have been subject to sunset provisions
leading to the wind down and closure of those offices when specified conditions, including set
time periods, are met.
Transparency of Budget Formulation and Proposals
Establishment, DFE, and other permanent IGs in the executive branch are required to develop
annual budget estimates that are distinct from the budgets of their affiliated entities. Further, such
budget estimates must include some transparency into the requested amounts before agency heads
and the President can modify them.58 The budget formulation and submission process for the
aforementioned IG types includes the following key steps:
•
•
•
IG budget estimate to affiliated agency head. The IG submits an annual budget
estimate for its office to the affiliated entity head. The estimate must include (1)
the aggregate amount for the IG’s total operations, (2) a subtotal amount for
training needs, and (3) resources necessary to support CIGIE.59
Agency budget request to President. The affiliated entity head compiles and
submits an aggregated budget request for the IG to the President. The budget
request includes any comments from the IG regarding the entity head’s proposal.
President’s annual budget to Congress. The President submits an annual
budget to Congress. The budget submission must include (1) the IG’s original
budget that was transmitted to the entity head, (2) the President’s requested
amount for the IG, (3) the amount requested by the President for training of IGs,
and (4) any comments from the IG if the President’s amount would “substantially
inhibit” the IG from performing his or her duties.60
This process provides IGs at least some budgetary independence from their affiliated entities,
particularly by enabling Congress to perceive differences between the budgetary perspectives of
IGs and affiliated agencies or the President. Governing statutory provisions outline the following
submission process, although it is unclear whether every IG interprets the statute similarly.
54 5 U.S.C. §403(h)(2)(C).
55 5 U.S.C. §403(h)(2)(C).
56 39 U.S.C. §202(e)(2)(a).
57 2 U.S.C. §1909(b)(2).
58 5 U.S.C. §§406(g) and 415(g)(1) (establishment and DFE IGs); 50 U.S.C. §3033(n) (IC IG); and 50 U.S.C.
§3517(f)(2) (CIA IG).
59 Congress has appropriated funds directly to CIGIE’s Inspector General Council Fund for specific purposes. For
instance, Congress has provided funding in recent years to support the oversight.gov website. See, for example,
Division D, Section 633 of the Consolidated Appropriations Act of 2019 (P.L. 116-6) appropriating $2 million to the
Inspector General Council Fund.
60 5 U.S.C. §§406(g) and 415(g)(1) (establishment and DFE IGs); 50 U.S.C. §3033(n) (IC IG); and 50 U.S.C.
§3517(f)(2) (CIA IG).
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Notably, one congressional committee investigation questioned whether the President was
consistently following the IG Act’s requirements for transparency of IG budget formulation.61
Treatment of budget estimates for other permanent IGs in the legislative branch varies. The
authorizing statutes for the USCP and LOC do not explicitly require the IGs to develop budget
estimates that are distinct from the affiliated entity’s budget request.62 The extent to which these
budget estimate requirements apply to the GPO and AOC IGs is unclear.63 As of 2024, the GAO
OIG’s budget estimate is developed separately and provided to Congress without alterations by
the Comptroller General.64 Some of these IGs have historically developed separate budget
estimates.65
Appropriations
The IG Act and other statutes explicitly create separate appropriations accounts for establishment
IGs and other permanent IGs in the executive branch.66 This requirement provides an additional
level of budgetary independence from the affiliated entity by preventing attempts to limit,
reallocate, or otherwise reduce IG funding once it has been specified in law, except as provided
through established transfer and reprogramming procedures and related interactions between
agencies and the appropriations committees.67
Appropriations for DFE IGs and other permanent IGs in the legislative branch, in contrast, are
part of the affiliated entity’s appropriations account. Absent statutory separation of a budget
account, the appropriations may be more susceptible to some reallocation of funds, although other
protections may apply.68 Past authorizing statutes for special IGs have not explicitly required
separate appropriations accounts, although in practice the President may propose, and Congress
may fund, special IGs through separately listed accounts.69
61 U.S. Congress, Senate Committee on Homeland Security and Governmental Affairs, Undermining Independent
Oversight, minority staff report, no date [released August 15, 2018], p. 2, archived at
https://web.archive.org/web/20180816170616/https://www.hsgac.senate.gov/imo/media/doc/REPORTUndermining%20Independent%20OversightThe%20President's%20Fiscal%20Year%202019%20Budget%20Does%20Not%20Adequately%20Support%20Federal
%20Inspectors%20General.pdf.
62 Authorizing statutes for the USCP, LOC, and GAO IGs do not incorporate the provision in Section 6 that contains
these budgetary requirements, nor do they include language establishing similar requirements. See 2 U.S.C.
§1909(d)(1) (USCP IG); 2 U.S.C. §185(d)(1) (LOC IG); and 31 U.S.C. §705 (GAO IG).
63 Authorizing statutes for special IGs and the AOC and GPO IGs incorporate portions of Section 6 of the IG Act.
However, it is unclear whether this incorporation extends the requirements to those IGs. See 2 U.S.C. §1808(d)(1)
(AOC IG) and 44 U.S.C. §3903(a) (GPO IG); 12 U.S.C. §5231(d)(1) (SIGTARP); and 5 U.S.C. §415 note (SIGAR).
64 31 U.S.C. §705(f)(2).
65 See, for example, SIGTARP, Congressional Budget Justification and Annual Performance Plan and Report: FY
2022, https://home.treasury.gov/system/files/266/09.-SIGTARP-FY-2022-CJ.pdf, and LOC Fiscal 2022 Budget
Justification, p. 105, https://www.loc.gov/static/portals/about/reports-and-budgets/documents/budgets/
fy2022.pdf#page=109.
66 31 U.S.C. §1105(a)(25); 50 U.S.C. §3517(f)(1) (CIA IG); 50 U.S.C. §3033(m) (IC IG).
67 For more information on reprogramming and transfers, see CRS Report R43098, Transfer and Reprogramming of
Appropriations: An Overview of Authorities, Limitations, and Procedures, by Michelle D. Christensen; and CRS
Report R47019, The Executive Budget Process: An Overview, by Dominick A. Fiorentino and Taylor N. Riccard.
68 For example, appropriations committees may choose to allocate funding to an IG in ways that would require advance
notification of any attempt by an affiliated entity head to reprogram funds away from the IG to another purpose.
69 For example, the President’s FY2022 budget submission included a separate account for SIGTARP. See U.S. Office
of Management and Budget (OMB), Budget of the U.S. Government, Fiscal Year 2022: Appendix, pp. 1025-1026,
https://www.govinfo.gov/content/pkg/BUDGET-2022-APP/pdf/BUDGET-2022-APP.pdf.
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Reporting Requirements
Statutory IGs have various reporting obligations to Congress, the Attorney General, agency
heads, and the public. Some reporting requirements are periodic, while others are triggered by a
specific event. The subsections below highlight some of the required reports for statutory IGs.70
Semiannual Report
The IG Act requires establishment and DFE IGs to issue semiannual reports that summarize the
activities of their offices. For example, the reports must include a summary of each audit and
inspection or evaluation report issued before the start of the reporting period that includes
“outstanding unimplemented recommendations” and the aggregate potential cost savings of those
recommendations.71 The IG Act further requires DFE and establishment IGs to make semiannual
reports available to the affiliated entity head, Congress, and the public, as follows:
•
•
•
The IG submits report to the affiliated entity head by April 30 and October 31
each year.
The affiliated entity head submits the report to the appropriate congressional
committees within 30 days of receiving it. The report must remain unaltered, but
it may include additional comments from the agency head.
The affiliated entity head makes the report available to the public within 60 days
of receiving it.72
Other permanent IGs must also issue semiannual reports, though required content can vary by
IG.73 For example, the semiannual report for the IC IG must include comparatively less
information on OIG activities than establishment and DFE IGs. Further, the IC IG has an
additional reporting requirement to certify whether the IG has had “full and direct access to all
information” relevant to IG functions.74 Special IGs are required to issue quarterly reports rather
than semiannual reports, which must include a “detailed statement” of obligations, expenditures,
and revenues associated with the programs, funds, and activities that they oversee.75
Seven-Day Letter
Establishment, DFE, and most other permanent IGs (five out of seven) are required to
immediately report to their affiliated entity heads any “particularly serious or flagrant problems,
abuses or deficiencies relating to the administration of programs and operations” at their affiliated
entities. The affiliated entity head must transmit the report unaltered to Congress within seven
70 Federal laws sometimes assign one-time or periodic reporting requirements on a specific policy area or subject.
These requirements are beyond the scope of this report.
71 5 U.S.C. §405(a)(10).
72 5 U.S.C. §405(b).
73 Authorizing statutes for other permanent IGs in the legislative branch (except the GAO IG) incorporate portions of
Section 5 of the IG Act, which require IGs to issue semiannual reports. However, it is unclear whether this
incorporation extends all elements of the semiannual report required by the IG Act to these IGs. See 2 U.S.C.
§1808(d)(1) (AOC IG); 2 U.S.C. §1909(c)(2) (USCP IG); 2 U.S.C. §185(d)(1) (LOC IG); and 44 U.S.C. §3903(a)
(GPO IG). Authorizing statutes for the GAO IG and other permanent IGs in the executive branch do not incorporate
Section 5 but establish separate semiannual reporting requirements. See 31 U.S.C. §705(e) (GAO IG); 50 U.S.C.
§3033(k)(1) (IC IG); 50 U.S.C. §3517(d)(1) (CIA IG).
74 50 U.S.C. §3033(k)(1)(b)(v). A similar requirement applies to the CIA IG. See 50 U.S.C. §3517(d)(1)(D).
75 12 U.S.C. §5231(i)(1) (SIGTARP); 5 U.S.C. §415 note (SIGAR); and 15 U.S.C. §9053(f)(1) (SIGPR).
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calendar days.76 This type of report is commonly referred to as a “seven-day letter.” Authorizing
statutes for the USCP and GAO IGs do not explicitly require issuance of seven-day letters, but
they may do so in practice.77
Top Management and Performance Challenges
The Reports Consolidation Act of 2000 requires IGs for executive branch agencies to annually
identify the “most serious management and performance challenges” facing their affiliated
agencies and to track the agency’s progress in addressing those challenges.78 These are commonly
referred to as top management and performance challenges (TMPCs). A covered IG must submit
the statement to the affiliated entity head 30 days in advance of the entity head’s submission of
the Annual Financial Report (AFR) or Performance and Accountability Report (PAR). The
agency head must include the statement unaltered (but with any comments) in the entity’s AFR or
PAR. IGs for government corporations in the executive branch, as well as special IGs and other
permanent IGs in the legislative branch, are not explicitly required to identify TMPCs.79
However, some of these IGs have elected to do so.80 CIGIE has periodically released reports on
common TMPCs facing multiple agencies.81
Transparency of IG Reports and Recommendations
Federal laws require varied levels of transparency for IG reports and related recommendations for
corrective action. The IG Act requires the following for establishment and DFE IGs:
•
•
•
Public availability of semiannual reports. Semiannual reports must be made
available to the public “upon request and at a reasonable cost.”82 In practice,
semiannual reports are routinely available on OIG websites and oversight.gov.
Audits and inspection or evaluation reports on OIG websites. Audit,
inspection, and evaluation reports must be posted on the OIG’s website within
three days of submitting final versions of the report to the affiliated entity head.83
Documents containing recommendations on OIG websites. Any “document
making a recommendation for corrective action” must be posted on the OIG’s
website within three days of submitting the final recommendation to the affiliated
76 5 U.S.C. §§405(d) and 415(g)(1) (establishment and DFE IGs); 50 U.S.C. §3033(k)(2) (IC IG); and 50 U.S.C.
§3517(d)(2) (CIA IG). Authorizing statutes for the AOC, LOC, and GPO IGs clearly incorporate portions of Section 5
of the IG Act pertaining to the seven-day letter. See 2 U.S.C. §1808(d)(1) (AOC IG); 2 U.S.C. 185(d)(1) (LOC IG);
and 44 U.S.C. §3903(a) (GPO IG).
77 Authorizing statutes for the USCP and GAO IGs do not incorporate portions of Section 5 of the IG Act requiring the
seven-day letter, nor do they establish similar requirements. See 2 U.S.C. §1909 (USCP IG) and 31 U.S.C. §705 (GAO
IG).
78 31 U.S.C. §3516(d). In this context, executive branch agency is defined as a “department, agency, or instrumentality
in the executive branch of the United States Government,” but it excludes government corporations defined in 31
U.S.C. §9101. See 31 U.S.C. §102 and 31 U.S.C. §3501.
79 31 U.S.C. §3516(d). 31 U.S.C. §9101 lists each “Government corporation” that is exempt from issuing TMPCs.
80 See, for example, Architect of the Capitol Office of Inspector General, Fiscal Year 2025 Statement of Management
Opportunities and Performance Challenges, January 20, 2026, https://www.oversight.gov/reports/fiscal-year-2025statement-management-opportunities-and-performance-challenges.
81 CIGIE, Top Management and Performance Challenges Facing Multiple Federal Agencies, February 2021,
https://www.ignet.gov/sites/default/files/untracked/TMPC_report_02022021.pdf.
82 5 U.S.C. §405(c).
83 5 U.S.C. §420(b).
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entity head.84 Additionally, oversight.gov includes a searchable database of open
recommendations.85
Application of these transparency requirements varies among other permanent IGs as follows:
•
•
•
Semiannual reports. Four out of five other permanent IGs in the legislative
branch are statutorily required to make semiannual reports available to the public
in the same manner specified in the IG Act.86 The GAO IG and other permanent
IGs in the executive branch, by contrast, are not explicitly required to make the
reports publicly available.87
Audits and inspections or evaluation reports on OIG websites. Authorizing
statutes for all seven other permanent IGs do not explicitly require the IGs to post
individual audit, inspection, or evaluation reports on their respective OIG
websites.88
Documents containing recommendations on OIG websites. The GAO IG and
other permanent IGs in the executive branch are not explicitly required to post
documents containing recommendations on their respective OIG websites.89 It is
unclear whether the AOC, GPO, LOC, and USCP IGs must post such
documents.90 Some IGs have elected to post certain reports on their websites. For
example, the GAO OIG website includes reports on audits and inspections or
evaluations as well as semiannual and peer review reports.91 By contrast, the
USCP OIG website lists only peer review reports.92
Oversight.gov
The majority of IGs have elected to participate in oversight.gov—an electronic repository
launched in October 2017 that contains most IG reports issued since 2014 and some earlier
reports.93 While oversight.gov was originally created on the initiative of the oversight community,
84 5 U.S.C. §404(e)(1)(C).
85 CIGIE, “Open Recommendations,” https://www.oversight.gov/reports/recommendations.
86 Authorizing statutes for the AOC, GPO, LOC, and UCSP IGs clearly incorporate portions of Section 5 pertaining to
public availability of semiannual reports. See 2 U.S.C. §1808(d)(1) (AOC IG); 44 U.S.C. §3903(a) (GPO IG); 2 U.S.C.
§185(d)(1) (LOC IG); and 2 U.S.C. §1909(c) (USCP IG).
87 Authorizing statutes for the GAO, CIA, and IC IGs do not incorporate Section 5 of the IG Act, nor do they establish
similar requirements. See 31 U.S.C. §705 (GAO IG); 50 U.S.C. §3033 (IC IG); and 50 U.S.C. §3517 (CIA IG).
88 The authorizing statutes for the AOC, CIA, IC, GAO, GPO, LOC, and USCP IGs do not incorporate Section 8M of
the IG Act, nor do they establish similar requirements. See 2 U.S.C. §1808 (AOC IG); 50 U.S.C. §3517 (CIA IG); 50
U.S.C. §3033 (IC IG); 44 U.S.C. §3903 (GPO IG); 2 U.S.C. §185 (LOC IG); and 2 U.S.C. §1909 (USCP IG).
89 Authorizing statutes for the GAO, CIA, and IC IGs do not incorporate Section 4 of the IG Act, nor do they establish
similar requirements. See 31 U.S.C. §705 (GAO IG); 50 U.S.C. §3033 (IC IG); and 50 U.S.C. §3517 (CIA IG).
90 The authorizing statutes for the AOC, GPO, LOC, and USCP IGs incorporate portions of Section 4 of the IG Act.
However, whether such incorporation extends requirements for documents with recommendations to be posted on OIG
websites to these IGs is unclear. See 2 U.S.C. §1808(d)(1) (AOC IG); 44 U.S.C. §3903(a) (GPO IG); 2 U.S.C.
§185(d)(1) (LOC IG); and 2 U.S.C. §1909(c) (USCP IG).
91 GAO OIG, “Inspector General,” https://www.gao.gov/ig/.
92 USCP OIG, “The Office of the Inspector General,” https://www.uscp.gov/the-department/office-inspector-general.
93 CIGIE, “CIGIE Launches Oversight.gov: IGs Found More Than $25 Billion in Potential Cost Savings in FY 2017,
New Website Shows,” October 2, 2017, https://www.ignet.gov/sites/default/files/files/
CIGIE%20Announces%20Official%20Launch%20of%20Oversight_gov_10_02_17_Final.pdf. For more information
on the website, see “About Oversight.gov,” https://www.oversight.gov/about/oversightgov. Many OIG websites have
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in 2020 Congress passed legislation requiring CIGIE to “establish and maintain” the website and
requiring most IGs to participate.94 Unlike many individual OIG websites, oversight.gov features
a searchable database that can filter reports across OIGs using several criteria, such as a specific
IG, review type, or keyword. IGs determine which reports to post on the website, and most
participating IGs post at least some reports. Many reports, including some not published on
oversight.gov, are also available on individual OIG websites.
Coordination and Oversight of Statutory IGs
Council of the Inspectors General on Integrity and Efficiency
CIGIE is the primary oversight and coordinating body for the IG community. The council
consolidated and replaced two IG coordinating bodies previously established by executive order:
the President’s Council on Integrity and Efficiency and the Executive Council on Integrity and
Efficiency.95 CIGIE members include all statutory IGs along with other relevant officers, such as
representatives of the Federal Bureau of Investigation (FBI) and the Office of Special Counsel.
The council chairperson is an IG elected from members of the council, and the Office of
Management and Budget (OMB) Deputy Director for Management serves as the executive
chairperson.96
Pursuant to the IG Act, CIGIE’s mission is to “address the integrity, economy, and effectiveness
of issues that transcend individual Government agencies” and “increase the professionalism and
effectiveness of [OIG] personnel.”97 The IG Act vests CIGIE with several responsibilities to
accomplish this mission,98 which can be grouped into the following categories:
•
•
IG workforce training and development. CIGIE is required to support
professional development for IGs.99 It also maintains at least three training
academies for auditors, investigators, inspectors/evaluators, and other personnel
in IG offices.100 CIGIE also develops and maintains other resources and guides to
aid OIG personnel in conducting their work.101
Coordination of IG external peer reviews. CIGIE develops and manages the
policies and procedures that govern how IGs conduct external peer review—a
more complete libraries of older reports than oversight.gov does. While it now appears that all IGs post most or all
public reports to oversight.gov, it is possible that some reports are not available on the site.
94 P.L. 116-260 §501 (Consolidated Appropriations Act, 2021), codified at 5 U.S.C. §424(e). Congress has also
provided appropriations specifically to support oversight.gov, including $850,000 in the Consolidated Appropriations
Act, 2023 (P.L. 117-328).
95 See Executive Order 12805 of May 11, 1992, “Integrity and Efficiency in Federal Programs,” 57 Federal Register
20627, May 14, 1992; and Executive Order 12301 of March 26, 1981, “Integrity and Efficiency in Federal Programs,”
46 Federal Register 19211, March 30, 1981.
96 5 U.S.C. §§424(b)(1) and 424(b)(2).
97 5 U.S.C. §424(a).
98 5 U.S.C. §424(c).
99 5 U.S.C. §424(c)(1)(E).
100 5 U.S.C. §424(c)(1)(E). See also CIGIE, “CIGIE Training Institute,” https://www.ignet.gov/content/cigie-traininginstitute.
101 See, for example, CIGIE, “Manuals & Guides,” https://ignet.gov/content/manuals-guides.
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•
•
•
process that involves one OIG assessing whether another OIG’s audits,
inspections, and investigations comply with the applicable quality standards.102
Investigations of alleged IG wrongdoing. The CIGIE Integrity Committee—the
sole statutorily established committee within the council—receives, reviews, and
refers for investigation allegations of misconduct by the IG or other OIG officials
according to processes and procedures detailed in the IG Act.103
Identification of IG candidates. The IG Act requires CIGIE to submit
recommendations of candidates for vacant IG positions to the appropriate
appointing authority.104 In response to this provision, the council established a
Candidate Recommendations Panel, which identifies and vets candidates for IG
positions.105
Cross-jurisdictional reports. CIGIE periodically publishes reports on issues that
transcend individual agency and IG jurisdictions. For example, as mentioned
previously, CIGIE periodically issues reports on cross-cutting TMPCs facing
multiple agencies, such as information technology security and management.106
Historically, CIGIE has received limited direct appropriations from Congress. Rather, the council
is primarily financed by the IG member offices, which contribute a pro rata amount of their
annual funding to CIGIE together with payments received in connection with attendance at
CIGIE training. The contributions are placed into a no-year revolving fund.107
Other Coordinating Bodies
Other interagency mechanisms have been created by law or administrative directive to support
coordination among IGs for specific issues. Current examples are described below.108
•
Lead Inspector General (LIG) for Overseas Contingency Operations (OCO).
The LIG is a formal coordination role assigned to the IG for DOD, the
Department of State, or USAID.109 The LIG provides comprehensive oversight of
programs and operations in support of OCO, including the management and
coordination of all related audits, inspections or evaluations, and investigations
conducted by the three IGs. The chair of CIGIE must designate an LIG for each
covered OCO.
102 See, for example, CIGIE, “IG Peer Reviews,” https://www.ignet.gov/content/ig-peer-reviews.
103 5 U.S.C. §424(d). The committee is composed of six members—four IGs on CIGIE, the FBI representative on the
council, and the Director of the Office of Government Ethics. The committee chairperson is elected to a two-year term
by the members of the committee.
104 5 U.S.C. §424(c)(1)(F).
105 For more information on the panel, see, for example, GAO, Inspectors General: Information on Vacancies and IG
Community Views on Their Impact, GAO-18-270, March 2018, p. 7, https://www.gao.gov/assets/700/690561.pdf.
106 CIGIE, “Top Management and Performance Challenges Facing Multiple Federal Agencies,” https://www.ignet.gov/
content/top-challenges.
107 5 U.S.C. §424(c)(3)(A)(ii); CIGIE, “Charter,” https://www.ignet.gov/content/charter; CIGIE, Fiscal Year 2018:
Agency Financial Report, November 14, 2018, pp. 32-33, https://ignet.gov/sites/default/files/files/
CIGIE_2018_Agency_Financial_Report.pdf; and CRS email communication with CIGIE on December 13, 2018.
108 A past example of a statutory coordinating body is the Recovery Accountability and Transparency Board, which
consisted of federal IGs and was tasked with overseeing funds covered under the American Recovery and
Reinvestment Act of 2009. For more information, see CRS Report R40572, General Oversight Provisions in the
American Recovery and Reinvestment Act of 2009 (ARRA): Requirements and Related Issues, by Clinton T. Brass.
109 P.L. 112-239, §848; listed in 5 U.S.C. §419.
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•
•
Council of Inspectors General on Financial Oversight (CIGFO). CIGFO is
composed of IGs for nine financial regulatory agencies and is chaired by the
Treasury IG. The mission of CIGFO is to facilitate information sharing among
the nine IGs and develop ways to improve financial oversight.110 In some cases,
CIGFO has engaged in activities that build upon existing work of individual IGs.
For example, CIGFO identified cross-cutting top management challenges facing
all nine financial regulatory agencies.111
Pandemic Response Accountability Committee (PRAC). The PRAC is
composed of nine IGs specified by law and additional IGs appointed by the
PRAC’s chairperson.112 The PRAC is tasked with conducting and supporting
oversight of the federal government’s response to the COVID-19 pandemic and
the funds spent in support of that activity. The PRAC has a coordinating function
among IGs and regarding issues that cross agency jurisdictional boundaries.113 In
more recent years, Congress has recognized the potential long-term utility of the
data analysis capacity that the PRAC has developed and that could be applied to
support IG work in other contexts.114 For instance, the FY2025 budget
reconciliation law, (P.L. 119-21), included a provision that pushed the statutory
sunset for the PRAC from 2025 to 2034, appropriated additional funding for its
operations, and extended its jurisdiction to include appropriations in the
reconciliation bill.115
Issues for Congress
Statutory IGs play a key role in government oversight, and Congress plays a key role in
establishing the structures and authorities to enable that oversight. The structure and placement of
IGs in government agencies will ideally allow OIG personnel to develop the capacity necessary to
review agency programs using expertise and best practices for effective administration. Further,
the IG Act’s dual reporting structure—IGs report to their agency heads and Congress—positions
IGs to advise agencies on how to improve their programs and policies and to inform Congress on
how it might monitor and facilitate such improvement. Congress, therefore, may have an interest
in ensuring that statutory IGs possess the resources and authorities necessary to fulfill their
oversight roles in a manner that maintains the confidence of stakeholders in the integrity and
competence of the IG community.
Congress may consider several options regarding IG structures, functions, and coordination as the
role of IGs in government oversight evolves.116 Some of these options relate to the long-term
110 P.L. 111-203, §989E; listed in 5 U.S.C. §424 note.
111 CIGFO, Top Management and Performance Challenges Facing Financial Regulatory Organizations, September
2018, https://oig.treasury.gov/sites/oig/files/Audit_Reports_and_Testimonies/
CIGFO%20TMPC%20Final%20Report%202019.pub.pdf.
112 P.L. 116-136 §15010; listed in 5 U.S.C. §424 note.
113 P.L. 116-136 §15010; listed in 5 U.S.C. §424 note.
114 See, for example, U.S. Congress, House Committee on Oversight and Government Reform, Subcommittee on
Government Operations, Curbing Federal Fraud: Examining Innovative Tools to Detect and Prevent Fraud in Federal
Programs, hearing, 119th Cong., 2nd sess., January 13, 2026.
115 P.L. 119-21.
116 Congress and other stakeholders have held events to commemorate the 20th, 25th, and 40th anniversaries of the IG
Act. These events have included discussions of many of the issues described in this section. See, for example, U.S.
Congress, Senate Committee on Governmental Affairs, The Inspector General Act: 20 Years Later, hearing, 105th
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development of the IG community based on the expectations consistently articulated by Congress
since the passage of the IG Act in 1978, while others relate to more immediate issues that arise
from time to time given the role of IGs and reaction of other actors in the government.
Independence
Federal laws and professional standards require IGs to be independent of the entities and/or
activities they evaluate. There is no standard definition, however, for what constitutes IG
independence. Rather, IGs derive independence from several provisions of the IG Act, such as the
requirement that IGs be appointed on the basis of integrity and demonstrated ability in certain
skill sets, without regard to political affiliation, as well as the independence in staff selection and
transparency of IG budgets.117 Nonetheless, a variety of recent personnel actions and other
changes involving OIGs have called into question whether IGs can operate with the independence
intended by Congress in the event that an Administration asserts broader authority to control or
limit OIGs. Congress may consider several broad questions if it weighs further options related to
IG independence, such as the following:
•
What constitutes IG independence? IGs, agencies, and Congress may perceive
independence differently, and by extension, may interpret and exercise statutory
authorities that affect independence in varied (and possibly divergent) ways. A
GAO report that assessed an IG’s level of independence stated the following:
To a large extent, independence is a state of mind of the auditor. The extent to which
an auditor’s independence has been affected by surrounding influences cannot be
easily assessed by a third party. Any effort to assess auditor independence requires
considerable subjective judgment, and reasonable people have room for
disagreement.118
•
What factors affect IG independence? Several internal and external factors
may also affect an IG’s independence. Examples of internal factors include selfinterest, familiarity with agency personnel in units undergoing a review, and
other “threats to independence” outlined in CIGIE’s quality standards.119
Examples of external factors include IG statutory authorities—such as
appointment and removal methods and access to agency records—structure and
leadership of the affiliated entity, and political influence. One emerging issue that
may limit the ability of IGs to provide independent oversight indirectly are the
budget and staff reductions that have occurred across the executive branch during
the second Trump Administration and appear to have impacted at least some IG
offices. One early analysis has found that the number of reports issued by some
IGs fell dramatically in the first half of FY2026 compared to historic averages.120
Cong., 2nd sess., September 9, 1998, S.Hrg. 105-737; U.S. Congress, House Committee on Government Reform,
Subcommittee on Government Efficiency and Financial Management, 25th Anniversary of the Inspector General Act—
Where Do We Go from Here?, hearing, 108th Cong., 1st sess., October 8, 2003, Serial No. 108-110; and CIGIE,
“Building on 40 Years of Excellence in Independent Oversight,” 2018, https://www.ignet.gov/2018-commemoration.
117 See, for example, 5 U.S.C. §§403(b), 406(a)(7), and 406(g).
118 GAO, Inspectors General: Allegations About the Independence of the Former VA Inspector General, GAO/AMFD89-46, March 1989, p. 3, http://www.gao.gov/assets/220/211076.pdf.
119 CIGIE, Quality Standards for Federal Offices of Inspector General, August 2012, pp. 10 and 12-13,
https://www.ignet.gov/sites/default/files/files/Silver%20Book%20Revision%20-%208-20-12r.pdf.
120 Jaron León and Chris Piper, “Oversight Diminished: Federal Watchdogs Are Conducting Less Oversight as Their
Staffs Shrink,” Partnership for Public Service, July 29, 2026, https://ourpublicservice.org/know-the-facts/resourcelibrary/publications/trump-inspector-general-oig-conducting-less-oversight-staff-shrink.
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•
What is the appropriate balance between IG independence and agency
management? The IG Act established a dual reporting structure that requires IGs
to report to both Congress and their affiliated entity heads.121 This structure
creates potential tension between IGs and their affiliated entity heads. An IG,
therefore, must maintain independence from the agency head to assess the
agency’s programs and operations objectively while also fostering a working
relationship with agencies to ensure the effectiveness of those assessments.122 In
recent years, executive branch leaders have moved to further integrate OIGs into
agency program implementation and, potentially, to increase agency control over
OIGs.123 For instance, recent reporting indicates that some OIGs now have
political appointees in management positions (in addition to the OIG), a marked
deviation from past precedent regarding the separation among OIGs, their
agencies, and Administration leaders.124
Appointment and Removal Methods
As noted earlier in this report, IGs can generally be appointed under one of three methods: (1) by
the President, with the advice and consent of the Senate (PAS appointments); (2) by the President
alone (PA appointments); or (3) by the affiliated entity head.125 Observers have asserted that
appointment and removal methods affect an IG’s independence and effectiveness—both directly
and indirectly—though opinions vary regarding the level and type of impact. Following the
removal of IGs during both the Obama and first Trump Administrations, the issue of removal has
received particular attention in Congress.126 Congress addressed some of its principal concerns
regarding removal and IG independence with provisions included in the James M. Inhofe
National Defense Authorization Act for Fiscal Year 2023 (P.L. 117-263), which require more
substantive reporting to Congress prior to removals and limit the circumstances under which IGs
can be removed or placed on non-duty status.127
121 5 U.S.C. §403(a); 5 U.S.C. §404(a)(5).
122 Congress acknowledged the potential for such tension but stated that the “potential advantages far outweigh the
potential risks.” U.S. Congress, Senate Committee on Governmental Affairs, report to accompany H.R. 8588, 95th
Cong., 2nd sess., August 8, 1978, S.Rept. 95-1071, p. 9. See also Partnership for Public Service, Walking the Line:
Inspectors General Balancing Independence and Impact, September 2016, https://ourpublicservice.org/wpcontent/uploads/2019/02/Walking-the-Line.pdf. The Partnership for Public Service describes itself as a “nonprofit,
nonpartisan organization that strives for a more effective government for the American people.” Partnership for Public
Service, “Privacy Policy,” May 14, 2021, https://ourpublicservice.org/privacy-policy. For more information about the
organization, see Partnership for Public Service, “About,” https://ourpublicservice.org/about/.
123 See the section “Is the Role of IGs Evolving?”
124 See Sean Michael Newhouse, “Federal Oversight Faces ‘Structural Conflict’ as Political Appointees Enter IG
Offices,” Government Executive, June 1, 2026, https://www.govexec.com/workforce/2026/06/federal-oversightconflict-political-appointees-ig/413888/.
125 Currently, there are no IGs appointed by the President without the advice and consent of the Senate, but there have
been in the past, and Congress may create such a position in the future.
126 See CRS In Focus IF11546, Removal of Inspectors General: Rules, Practice, and Considerations for Congress, by
Ben Wilhelm; and CRS Legal Sidebar LSB10476, Presidential Removal of IGs Under the Inspector General Act, by
Todd Garvey. For additional discussion of potential options for Congress to alter IG removal methods, see CRS Report
R46762, Congress’s Authority to Limit the Removal of Inspectors General, by Todd Garvey; and CRS In Focus
IF11698, Legislative Proposals Related to the Removal of Inspectors General in the 116th Congress, by Ben Wilhelm.
127 Title LII, Subtitle A. President Biden removed the Inspector General of the Railroad Retirement Board in 2024
under these new requirements. See CRS Insight IN12363, Removal of Inspectors General: The First Tests of New
Statutory Requirements, by Ben Wilhelm.
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Early in the second Trump Administration, the President removed 18 establishment IGs without
providing the statutorily required notice to Congress. When asked by reporters about the action
the President stated, “I don’t know them, but some people thought that some were unfair or some
were not doing their job. It’s a very standard thing to do.”128 A group of these former IGs
challenged their removal without notice in court, and while a court agreed that their removal was
improper, it did not order their reinstatement at the preliminary injunction stage because the
President would retain authority to remove each IG in compliance with the 30-day notice
requirement.129
Direct Impact
Some observers have argued that the PAS appointment method strengthens IG independence. For
example, GAO general counsel Gary Kepplinger suggested that PAS-appointed IGs experience
greater organizational independence compared to agency-appointed IGs, noting that “the further
removed the appointment source is from the entity to be audited, the greater the level of
independence.”130 Others have asserted that PAS appointments—including converting an IG from
agency appointment to a PAS appointment—might politicize the IG position and reduce IG
effectiveness.131
Similar debate exists regarding IG removal methods. Some observers have expressed concern
over potential politicization of the IG removal process, which may undermine IG
independence.132 Some have suggested that limiting the removal of IGs “for cause” could, if
allowed, mitigate arbitrary removal (such as for political reasons) and enhance IG
independence.133 Others have asserted that this limitation might prevent the President or agency
heads from removing IGs for legitimate reasons (such as poor performance), thus diminishing IG
accountability.134 While these are questions of long-standing interest regarding IGs, recent
128 David Nakamura, “Trump Defends Ousting at Least 15 Independent Inspectors General in Late-Night Purge,”
Washington Post, January 25, 2025.
129 See, for example, Jory Heckman, “Judge Finds Trump Unlawfully Fired Agency IGs, but Won’t Reinstate Them,”
Federal News Network, September 24, 2025, https://federalnewsnetwork.com/agency-oversight/2025/09/trumpunlawfully-fired-17-agency-igs-judge-finds-but-wont-reinstate-them/.
130 GAO, Inspectors General: Independent Oversight of Financial Regulatory Agencies, GAO-09-524T, March 25,
2009, pp. 3-4, http://www.gao.gov/new.items/d09524t.pdf.
131 See, for example, U.S. Congress, House Committee on Oversight and Government Reform, Subcommittee on
Government Management, Organization, and Procurement, The Roles and Responsibilities of Inspectors General
Within Financial Regulatory Agencies, hearing, 111th Cong., 1st sess., March 25, 2009, Serial No. 111-49, pp. 34, 46,
49, 53, and 70; and U.S. Congress, House Committee on Government Reform, “Politicization of Inspectors General,”
minority staff report, October 21, 2004, https://web.archive.org/web/20050724160427/http://
reform.democrats.house.gov/story.asp?id=726. It is not clear how the recent Supreme Court ruling in Trump v.
Slaughter might affect Congress’s options regarding the appointment and removal of IGs. For discussion of the
potential implications of the decision, see CRS Legal Sidebar LSB11448, Trump v. Slaughter and the Future of ForCause Removal Protections, by Benjamin M. Barczewski, Todd Garvey, and Jonathan M. Gaffney.
132 See, for example, U.S. Congress, House Committee on Oversight and Government Reform, “Update and
Supplement to the Initial Report: The Firing of the Inspector General for the Corporation for National and Community
Service,” press release, March 2, 2010, https://oversight.house.gov/report/update-and-supplement-to-the-initial-reportthe-firing-of-the-inspector-general-for-the-corporation-for-national-and-community-service/.
133 See, for example, GAO, Highlights of the Comptroller General’s Panel on Federal Oversight and The Inspectors
General, GAO-06-931SP, September 2006, pp. 2 and 5, https://www.gao.gov/assets/210/202958.pdf.
134 See, for example, U.S. Congress, House Committee on Oversight and Government Reform, Subcommittee on
Government Management, Organization, and Procurement, Inspectors General: Independence and Integrity, hearing,
110th Cong., 1st sess., June 20, 2007, Serial No. 110-48, pp. 13, 34, and 105; and U.S. Congress, Senate Committee on
Homeland Security and Governmental Affairs, Strengthening the Unique Role of the Nation’s Inspectors General,
hearing, 110th Cong., 1st sess., July 11, 2007, S.Hrg. 110-587, pp. 134-139.
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developments suggest that Congress may wish to consider whether OIGs are in a period of
reduced independence and, if so, whether Congress should devise new legislative means of
increasing their independence.
Indirect Impact
IG appointment and removal methods may also indirectly affect independence by contributing to
IG vacancies. Concerns exist that the IG vetting and confirmation processes (particularly PAS
appointments) take too long, leading to prolonged IG vacancies and use of acting IGs.135 It could
also be argued that removal methods (such as “for cause” removal and term limits) might increase
the number and length of IG vacancies. Alternatively, in 2025 and 2026, there have been
persistently high IG vacancies, which is at least partly attributable to the pace at which
nominations are being made and considered in the Senate.136
Some observers have argued that acting IGs are inherently, or may be perceived to be, less
independent or effective compared to permanent IGs, for various reasons. Examples include not
having gone through formal vetting processes, reduced ability to set long-term strategies and
priorities, and perverse incentives not to report problems in agency operations or resist political
pressure from agency heads—particularly for those seeking the permanent position.137 For
example, in a letter to the majority and minority leaders of the Senate for the 115th Congress,
CIGIE stated that
no matter how able or experienced an Acting Inspector General may be, a permanent IG
has the ability to exercise more authority in setting new policies and procedures and, by
virtue of the authority provided for in the IG Act, inevitably will be seen as having greater
independence.138
Other observers have asserted that acting IGs are not inherently less independent, nor do they
appear or are perceived to be less independent, than permanent IGs. For example, in a GAO
report, some permanent IGs and OIG employees responding to a survey provided several reasons
for why acting IGs are not less independent than permanent IGs. Examples include that acting
IGs have the same statutory authorities as permanent IGs, are held to the same standards as
permanent IGs, and are typically career OIG employees who prioritize independence.139
Role and Independence of CIGIE
Changes to CIGIE’s role in the organization of the IG community may impact its independence.
Historically, CIGIE has served as a forum for IGs to develop the specialized skills and standards
of the community. It also serves a number of other IG community functions that may help
preserve independence and promote effectiveness of OIGs. These include activities such as
135 See, for example, U.S. Congress, Senate Committee on Homeland Security and Governmental Affairs, Watchdogs
Needed: Top Government Investigator Positions Left Unfilled for Years, hearing, 114th Cong., 1st sess., June 3, 2015,
S.Hrg. 114-486, pp. 2, 5, 8-10, 14, 16, 18-19, 23, 25, and 32.
136 For real-time information on IG vacancies, see Oversight.gov, “Inspector General Vacancies,”
https://www.oversight.gov/about/inspectors-general-vacancies.
137 S.Hrg. 114-486, pp. 9, 16, and 45-47; GAO, Inspectors General: Information on Vacancies and IG Community
Views on Their Impact, GAO-18-270, March 2018, pp. 27-41, https://www.gao.gov/assets/700/690561.pdf.
138 Letter from Micheal E. Horowitz, CIGIE chair, and Allison C. Lerner, CIGIE vice chair, to Sen. Mitch McConnell
and Sen. Harry Reid, November 7, 2016, p. 2, https://www.ignet.gov/sites/default/files/files/
CIGIE_Senate_Letter_IG_Vacancies_07Nov16%20(1).pdf.
139 GAO, Inspectors General: Information on Vacancies and IG Community Views on Their Impact, GAO-18-270,
March 2018, pp. 28-41, https://www.gao.gov/assets/700/690561.pdf.
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maintaining oversight.gov as a public resource for IG reports and recommendations, operating the
Integrity Committee to receive and review reports of potential misconduct by senior officials in
the IG community, identifying and recommending qualified candidates to serve as IGs, and
leading cross-cutting oversight activities such as those of the PRAC. While CIGIE is integral to
the activities of the IG community, concerns and calls for reforms have been discussed in recent
years.140
One significant discussion has revolved around the effectiveness of the Integrity Committee and
whether its processes are sufficiently fair and transparent.141 Oversight of the IGs themselves has
been challenging for the community and other stakeholders because of the need to balance the
value of robust independence for OIGs with the need to ensure that they are themselves
accountable when problems arise in their operations. At the request of Members of the House
Committee on Oversight and Government Reform, GAO recently completed a study of the
Integrity Committee and recommended several changes to Integrity Committee processes focused
on improving and standardizing reporting and other processes.142
Another CIGIE-related issue that Congress might wish to address is the agency’s funding
structure. Historically, CIGIE operations have been funded largely by assessments paid from the
appropriations of its member OIGs. Congress has also chosen, in many fiscal years, to provide
CIGIE with a line item appropriation specifically to support the operations and development of
oversight.gov.143
The IG community has asked Congress on a number of occasions to change this funding model
by providing a line item appropriation for all CIGIE operations.144 While Congress has not chosen
to implement this request from CIGIE in the past, it might consider doing so following a decision
by OMB officials in September 2025 not to apportion appropriated funds for CIGIE, effectively
shutting down the agency for over a month.145 While OMB eventually made funding available in
November 2025, during that time, oversight.gov and a number of OIG websites hosted by CIGIE
were offline.146 This meant that IG reports for many agencies were not widely available, nor were
a number of web portals through which the public can report potential waste, fraud, and abuse.
140 See, for example, Sean Michael Newhouse, “Inspector General Group Would be Axed Under New House GOP
Bill,” GovExec, July 22, 2026, https://www.govexec.com/oversight/2026/07/inspector-general-group-would-be-axedunder-new-house-gop-bill/414923/.
141 See, for example, U.S. Congress, House Committee on Oversight and Accountability, Subcommittee on
Government Operations and the Federal Workforce, Oversight of the Council of the Inspectors General on Integrity
and Efficiency, 118th Cong., 2nd sess., July 23, 2024, https://www.congress.gov/event/118th-congress/houseevent/LC73107/text.
142 GAO, Inspectors General Integrity Committee: Strengthened Oversight and Policy Needed to Ensure Consistent
Investigations, GAO-26-107922, May 2026, https://www.gao.gov/assets/gao-26-107922.pdf.
143 See, for example, Consolidated Appropriations Act, 2026; 140 Stat. 173, p. 467.
144 See, for example, letter from Joaquin Ferrao, chair, CIGIE Legislation Committee, to Jason Miller, Executive Chair,
CIGIE, February 22, 2023, https://www.ignet.gov/sites/default/files/files/CIGIELegislativePriorities118thCongress.pdf.
145 See letter from Sen. Susan Collins and Sen. Chuck Grassley to Russell Vought, director of OMB, September 29,
2025, https://www.grassley.senate.gov/imo/media/doc/collins_grassley_to_omb_-_cigie_prac.pdf.
146 See Sean Michael Newhouse and Natalie Alms, “Trump Administration Resumes Funding for Inspectors General
Hub After Previously Blocking It,” Government Executive, November 18, 2025, https://www.govexec.com/oversight/
2025/11/trump-administration-resumes-funding-inspectors-general-hub-after-previously-blocking-it/409615/.
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The IG’s Role and Effectiveness
Some observers have asserted that IG reviews disproportionately focus on program compliance
and outputs rather than program outcomes.147 The Partnership for Public Service has
characterized this dichotomy as “the difference between counting the number of people who
show up at a job training program, versus examining the number of attendees who get and keep a
job after participating in the program.”148 These observers have further argued that greater
emphasis on program outcomes could better improve agency programs and operations and, by
extension, increase IG effectiveness. Some IGs already assess program outcomes in addition to
outputs and compliance. For example, a 2018 Department of Labor IG audit concluded that the
Job Corps program could not demonstrate that it helped place participants in meaningful jobs
related to their training primarily because of noncompliance with certain program policies and
ineffective transition services.149
In addition, some observers have claimed that certain statutory requirements do not promote IG
effectiveness. Similarly to the critiques above, the Project on Government Oversight has argued
that statutorily required metrics in IG semiannual reports focus on program outputs—such as the
dollar value of disallowed costs—but not necessarily on program outcomes150 and that the IG
peer review process focuses on compliance with applicable quality standards and does not
evaluate the quality or effectiveness of an IG’s work.151 Including an evaluation of IG
performance and effectiveness as part of the peer review process might impact how IGs approach,
conduct, and report on audits and investigations.
Is the Role of IGs Evolving?
Since the COVID-19 pandemic, there have been notable developments in how stakeholders view
the role of IGs in preventing fraud and other issues in agency programs. The IG Act has always
provided that one purpose of IGs is to “prevent and detect fraud and abuse” in agency programs
and operations.152 However, largely on the basis of the scope of fraud and other challenges for
pandemic relief programs, there has been increased interest in leveraging the expertise of OIGs to
identify and address potential fraud earlier in the program implementation process. This interest
can be seen in initiatives in both the Biden and second Trump Administrations involving IGs in
the development of anti-fraud programs.153
Some Members of Congress have also been interested in the potential benefits of such activities.
For example, legislation introduced during the 119th Congress, the Fraud Prevention and
147 See, for example, Bipartisan Policy Center, Oversight Matters, p. 17.
148 Partnership for Public Service, The Forward-Looking Inspector General, November 4, 2017, p. 2.
149 U.S. Department of Labor OIG, Job Corps Could Not Demonstrate Beneficial Job Training Outcomes, March 30,
2018, https://www.oig.dol.gov/public/reports/oa/2018/04-18-001-03-370.pdf.
150 Project on Government Oversight (POGO), Inspectors General: Accountability Is a Balancing Act, March 20, 2009,
pp. 13-17, 47, and 97-98, https://docs.pogo.org/report/2009/ig-accountability20090320.pdf?_ga=2.139320883.1016789778.1785522306-1655324532.1785522306; and Peter Tyler, “Rating the
Watchdogs: Are Our Inspectors General Effective?,” POGO, August 10, 2018, https://www.pogo.org/analyses/ratingwatchdogs-are-our-inspectors-general-effective.
151 POGO, Inspectors General: Accountability Is a Balancing Act, pp. 43-45.
152 5 U.S.C. §402(b)(2)(B).
153 See CRS Report R47593, Pandemic Oversight: The Biden Administration’s New Anti-Fraud Proposal, coordinated
by Ben Wilhelm, pp. 12-13 (regarding Biden Era “gold standard meetings” involving OMB, OIGs, and agencies) and
Executive Order 14395 of March 19, 2026, “Establishing the Task Force to Eliminate Fraud,” 91 Federal Register
13485, March 19, 2026 (establishing an anti-fraud task force involving a range of Administration officials, including
IGs).
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Accountability Act (H.R. 8312), would expand many of the data analysis and sharing activities of
the PRAC to a broader range of government activities and reorganize the capacity and functions
of the PRAC into a long-term office within the Department of the Treasury. While such changes
have the potential to improve anti-fraud systems across federal programs, Congress might also
wish to consider potential trade-offs related to IG independence, especially as IGs are asked to
audit or evaluate, and potentially criticize, anti-fraud procedures they may have had a hand in
designing.
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Appendix A. Statutory Inspectors General by Type
The three tables below list statutory inspectors general (IGs) by type—establishment, DFE, and
other permanent. The tables include the IG’s affiliated entity, year of establishment, and original
authorizing statute. The tables do not include IGs that have been abolished or administratively
established.
Table A-1. Establishment IGs
As of April 2026
Office of Inspector General
(current name of agency listed)
Year
initially
established
Original
authorizing
statute
Department of Health and Human Servicesa
1976
P.L. 94-505
Department of Energya
1977
P.L. 95-91
Department of Agriculture
Department of Commerce
Department of Housing and Urban Development
Department of Labor
Department of the Interior
Department of Transportation
Department of Veterans Affairs
Environmental Protection Agency and Chemical Safety and Hazard
Investigation Boardb
General Services Administration
National Aeronautics and Space Administration
Small Business Administration
1978
P.L. 95-452
Department of Education
1979
P.L. 96-88
Department of State and U.S. Agency for Global Mediac
1980
P.L. 96-465
U.S. Agency for International Development
1981
P.L. 97-113
Department of Defense
1982
P.L. 97-252
Railroad Retirement Board
1983
P.L. 98-76
Department of Justice
Department of the Treasury
Nuclear Regulatory Commission
Office of Personnel Management
1988
P.L. 100-504
Corporation for National and Community Service (AmeriCorps)
1993
P.L. 103-82
Federal Deposit Insurance Corporation (FDIC)d
1993
P.L. 103-204
Social Security Administration
1994
P.L. 103-296
Treasury IG for Tax Administration
1998
P.L. 105-206
Tennessee Valley Authority (TVA)e
2000
P.L. 106-422
Department of Homeland Security
2002
P.L. 107-296
Export-Import Bank of the United States
2002
P.L. 107-189
Federal Housing Finance Agency (FHFA)f
2008
P.L. 110-289
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Office of Inspector General
(current name of agency listed)
Year
initially
established
Original
authorizing
statute
National Reconnaissance Office (NRO)g
2014
P.L. 113-126
National Security Agency (NSA)g
2014
P.L. 113-126
Federal Communications Commission (FCC)h
2018
P.L. 115-141
Source: CRS analysis of the U.S. Code and original authorizing statutes for the listed IGs.
Notes: “Federal establishments” are defined in 5 U.S.C. §401(1). IGs for establishments are appointed and
removable by the President. The table does not include previous establishment IGs that were abolished.
a. The IG Amendments Act of 1988 (P.L. 110-504) abolished the IGs for the Departments of Energy and
Health, Education, and Welfare and created IGs for the Department of Energy and Department of Health
and Human Services as “establishments” under the IG Act of 1978.
b. The EPA IG also oversees the Chemical Safety and Hazard Investigation Board, which was established under
the Clean Air Act Amendments of 1990 (P.L. 101-549).
c. The Foreign Affairs Reform and Restructuring Act of 1998 (P.L. 105-277, §1322) expanded the Department
of State IG’s jurisdiction to include the U.S. Agency for Global Media.
d. The FDIC was originally defined as a designated federal entity (DFE) under the IG Amendments Act of
1988. The Resolution Trust Corporation Completion Act (P.L. 103-204) redesignated the FDIC as an
establishment.
e. The TVA was originally defined as a DFE under the IG Amendments Act of 1988. The Bill to Amend the
Inspectors General Act of 1978 (5 U.S.C. App) to Provide That Certain Designated Federal Entities Shall Be
Establishments Under Such Act, and For Other Purposes (P.L. 106-422), redesignated the TVA as an
establishment.
f.
The IG Amendments Act of 1988 originally defined the Federal Home Loan Bank Board as a DFE. The
Financial Institutions Reform, Recovery, and Enforcement Act of 1989 (P.L. 101-73) abolished the board,
replaced it with the Federal Housing Finance Board (FHFB), and designated the FHFB as a DFE. The Housing
and Economic Recovery Act of 2008 (P.L. 110-289) abolished the FHFB, replaced it with the FHFA, and
designated the FHFA as an establishment.
g. The NRO and NSA were originally defined as DFEs under the Intelligence Authorization Act for Fiscal Year
2010 (P.L. 111-259). The Intelligence Authorization Act for Fiscal Year 2014 (P.L. 113-126) redesignated the
NRO and NSA as establishments.
h. The FCC was originally defined as a DFE under the IG Amendments Act of 1988. The Consolidated
Appropriations Act, 2018 (P.L. 115-141), redesignated the FCC as an establishment.
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Table A-2. Designated Federal Entity (DFE) IGs
As of June 2026
Year
initially
established
Original
authorizing
statute
Amtrak
Appalachian Regional Commission
Board of Governors of the Federal Reserve and the Bureau of
Consumer Financial Protectiona
Commodity Futures Trading Commission
Consumer Product Safety Commission
Equal Employment Opportunity Commission
Farm Credit Administration
Federal Election Commission
Federal Labor Relations Authority
Federal Maritime Commission
Federal Trade Commission
Legal Services Corporation
National Archives and Records Administration
National Credit Union Administration
National Endowment for the Arts
National Endowment for the Humanities
National Labor Relations Board
National Science Foundation
Peace Corps
Pension Benefit Guaranty Corporation
Smithsonian Institution
U.S. International Trade Commission
U.S. Postal Serviceb
U.S. Securities and Exchange Commission
1988
P.L. 100-504
Denali Commission
1999
P.L. 106-31
Election Assistance Commission
2002
P.L. 107-252
Defense Intelligence Agency
2010
P.L. 111-259
National Geospatial-Intelligence Agency
2010
P.L. 111-259
Committee for Purchase From People Who Are Blind or Severely
Disabled (AbilityOne)
2015
P.L. 114-113
U.S. International Development Finance Corporation
2018
P.L. 115-254
Office of Inspector General
(current name of agency listed)
Source: CRS analysis of the U.S. Code and original authorizing statutes for the listed IGs.
Notes: “Designated federal entities” (DFEs) are defined in 5 U.S.C. §415(a)(2). The table does not include
previous DFE IGs that were abolished.
a. The Dodd-Frank Wall Street Reform and Consumer Protection Act (P.L. 111-203, §1011 and §1081)
expanded the jurisdiction of the IG for the Federal Reserve Board to cover the Consumer Financial
Protection Bureau.
b. The Postal Service Reform Act of 2022 (P.L. 117-108; §209(a)) expanded the jurisdiction of the IG for the
U.S. Postal Service to cover the Postal Regulatory Commission.
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Table A-3. Other Permanent IGs
As of June 2026
Office of Inspector General
(current name of agency listed)
Year
initially
established
Original
authorizing
statute
U.S. Code
citation
Government Publishing Officea
1988
P.L. 100-504
44 U.S.C. §3901-3903
Central Intelligence Agency
1989
P.L. 101-193
50 U.S.C. §3517
Library of Congress
2005
P.L. 109-55
2 U.S.C. §185
U.S. Capitol Police
2005
P.L. 109-55
2 U.S.C. §1909
Architect of the Capitol
2007
P.L. 110-161
2 U.S.C. §1808
Government Accountability Office
2008
P.L. 110-323
31 U.S.C. §705
Intelligence Community
2010
P.L. 111-259
50 U.S.C. §3033
Source: CRS analysis of the U.S. Code and original authorizing statutes for the listed IGs.
Notes: Includes agency IGs that operate under individual statutes outside of the IG Act of 1978, as amended.
The table does not reflect other permanent IGs that were abolished.
a. Formerly the Government Printing Office.
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Appendix B. Selected Inspectors General Statutory
Authorities and Requirements
Table B-1 compares selected statutory authorities and requirements across the four different types
of statutory inspectors general (IGs) in the federal government. Unless otherwise noted in bold,
the listed authorities and requirements apply to all IGs grouped under each type.
The table focuses on IG authorities and requirements that are expressly mandated in the
applicable authorizing statute. Although special IGs and other permanent IGs in the legislative
branch are not created under the Inspector General Act of 1978 (hereinafter IG Act), their
authorizing statutes incorporate—and therefore make applicable—certain provisions of the IG
Act. These “incorporation by reference” provisions are subject to some interpretation. Even when
the authorizing statute for a special IG or other permanent IG in the legislative branch clearly and
unequivocally incorporates a specific provision of the IG Act, interpretation may vary regarding
whether subsequent amendments to that incorporated provision apply to the IGs if they occurred
after the enactment of the IG’s authorizing statute.154
Information on recently sunsetted special IGs is included for reference and to support potential
creation of special IGs in the future.
The list below defines and explains recurring terms included in the table:
•
•
•
•
Identical requirement. The requirement is identical to the corresponding
requirement in the IG Act. The authorizing statutes for the listed IGs explicitly
state the identical requirement or clearly incorporate the sections of the IG Act
that contain the requirement. Applies to the listed IGs.
Similar requirement. The requirement is similar to a corresponding requirement
in the IG Act. The authorizing statutes for the listed IGs explicitly state the
similar requirement or clearly incorporate portions of the sections of the IG Act
that contain the requirement. Applies to the listed IGs.
No similar requirement specified in authorizing statutes. The authorizing
statutes for the listed IGs do not explicitly state the requirement, nor do they
incorporate sections of the IG Act containing the requirement. Does not apply to
listed IGs.
Unclear requirement. The authorizing statutes for the listed IGs incorporate the
IG Act section that includes the requirement, but the requirement was added as an
amendment to the IG Act after enactment of the authorizing statutes for the listed
IGs. May or may not apply to the listed IGs.
154 See footnote 39.
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Table B-1. Comparison of Selected Statutory Authorities and Requirements for IGs
Unless otherwise noted in bold, the listed authorities and requirements apply to all IGs grouped under each type
Other Permanent IG
Authority or
Requirement
Establishment
IG
DFE
IG
Executive Brancha
Legislative Branchb
Special IG (former provisions
provided for reference)
Appointment, Removal, Term Limits, and Oversight Jurisdiction
Oversight
jurisdiction
Single-agency jurisdiction. Oversight of programs, operations, and activities under the jurisdiction of a single
affiliated federal entity or entities (see Table 3 for examples of exceptions)
Cross-agency jurisdiction. Oversight of
a program, operation, or activity
irrespective of agency jurisdiction
SIGPR: Jurisdiction over
Department of the Treasury’s
CARES Act Title IV programs
Appointment
method
Appointed by President
with the advice and
consent of the Senate
Appointed by the affiliated
entity head
USPS IG: Appointed by a
majority vote of the Postal
Board governors and the
Postal Regulatory
commissioners.d
Appointed by
President with the
advice and consent of
the Senate
Appointed by the
affiliated entity head
USCP and AOC IGs:
Appointed by the
affiliated entity head in
consultation with other
legislative branch IGsc
Appointed by the President with the
advice and consent of the Senate
SIGAR: Appointed by the President
alone
Removal or
transfer method
Removal or transfer by
President for any
reason
Removal or transfer for
any reason by the entity
head, or upon written
concurrence of two-thirds
majority of the governing
board, committee, or
commission
USPS IG: Removal for
cause only upon written
concurrence of seven out
of nine Postal Board
governors and three
Postal Regulatory
commissionerse
Removal only by
President for any
reason
Removal only by
affiliated entity head for
any reason
USCP IG: Removal
only upon unanimous
vote of all voting
members of the Capitol
Police Board for any
reasonf
Removal or transfer by President
for any reason
CRS-34
Other Permanent IG
Authority or
Requirement
Establishment
IG
DFE
IG
Congressional
notification of
removal or
transfer
President to notify
Congress, in writing,
the substantive rationale
for removal or transfer
no later than 30 days
before the action
Affiliated entity head to
notify Congress, in writing,
the substantive rationale
for removal or transfer no
later than 30 days before
the action
Term limit
None
USPS IG: Seven-year term limit for unlimited
number of termsi
Executive Brancha
Legislative Branchb
President to notify
congressional
intelligence
committees, in
writing, the
substantive rational
for removal no later
than 30 days before
the action
Affiliated entity head to
promptly notify
Congress, in writing,
the reasons for a
removal only upon such
removalg
USCP IG: Capitol
Police Board to notify
certain congressional
committees, in writing,
the reasons for removal
only upon such
removalh
None
USCP IG: Five-year term limit for up to three
termsj
Special IG (former provisions
provided for reference)
President to notify Congress, in
writing, the substantive rationale for
removal or transfer no later than 30
days before the action
None
Salary, Appropriations, and Budget Formulation
Salary
Executive Schedule (EX)
III maximum, plus 3%
Budget
formulation
Appropriations
CRS-35
Not less than the average
total compensation of the
affiliated entity’s senior
level executives
Specific dollar amount
below the salary of the
affiliated entity head
GPO and LOC IGs:
No specific amount or
pay scale specified in
authorizing statutesk
EX III maximum, plus 3%
Stand-alone annual budget estimate separate from affiliated agency’s budget
estimate
Unclear requirement
GAO: identical
requirement
Unclear requirementm
Separate appropriations
account in President’s
budget
No separate account
No similar requirement specified in
authorizing statutesn
No separate account
EX III maximum, plus
3%
Separate
appropriations
account in President’s
budget
Other Permanent IG
Authority or
Requirement
Establishment
IG
DFE
IG
Executive Brancha
Legislative Branchb
Special IG (former provisions
provided for reference)
Reporting Requirements
Semiannual or
quarterly reports
Required to issue a semiannual report that
summarizes IG activities specified in the IG Act
Similar requirement (IGs must issue a semiannual
report, but required elements of the report can
vary)
Required to issue quarterly reports
that include a detailed statement of
all obligations, expenditures, and
revenues associated with covered
programs and activities
Seven-day letter
Required to report “particularly serious or flagrant
problems, abuses, or deficiencies” in agency programs
or operations to affiliated entity head, who must
transmit the report unaltered to appropriate
congressional committees and subcommittees within
seven days
Similar requirement
Unclear requirement
Top management
challenges
Required to report the “most serious management and performance challenges
facing the agency” and the agency’s progress in addressing those challenges
IGs for government corporations: Statutorily exempto
Identical requirement
GAO and USCP IGs:
No similar requirement
specified in authorizing
statutes
No similar requirement specified in authorizing statutes
Transparency of IG Reports and Recommendations
Transparency of
reports and
recommendations
CRS-36
Semiannual reports. Required availability to the public
“upon request and at a reasonable cost”
Semiannual reports.
No similar
requirement specified
in authorizing statutes
Semiannual reports.
Identical requirement
Quarterly reports.
SIGTARP: Available to the public
upon request
SIGAR: Available on a public
website
SIGPR: Available to Congress
Audits and inspections or evaluations on website. Reports
(or portion of the reports) must be posted on the
OIG’s website within three days of submitting final
versions of the reports to the affiliated entity head
Audits and inspections
or evaluations on
website. No similar
requirement specified
in authorizing statutes
Audits and inspections or
evaluations on website.
No similar requirement
specified in authorizing
statute
Audits and inspections or evaluations
on website. Unclear requirement
Other Permanent IG
Authority or
Requirement
Establishment
IG
DFE
IG
Documents with recommendations on website. Any
“documents making a recommendation for corrective
action” must be posted on the OIG’s website within
three days of submitting the final recommendation to
the affiliated entity head
Executive Brancha
Legislative Branchb
Documents with
recommendations on
website. No similar
requirement specified
in authorizing statutes
Documents with
recommendations on
website. Unclear
requirement
Special IG (former provisions
provided for reference)
Documents with recommendations on
website. Unclear requirement
Source: CRS analysis of the IG Act and authorizing statutes for IGs established outside of the IG Act.
Notes: The table focuses on IG authorities and requirements that are expressly mandated in the applicable authorizing statute. Although other permanent IGs in the
legislative branch are not created under the IG Act, their authorizing statutes incorporate—and therefore make applicable—certain provisions of the IG Act. It should be
noted that these “incorporation by reference” provisions are subject to some interpretation. Even when the authorizing statute for a special IG or other permanent IG in
the legislative branch clearly and unequivocally incorporates a specific provision of the IG Act, interpretation may vary regarding whether subsequent amendments to that
incorporated provision apply to the IGs if they occurred after the enactment of the IG’s authorizing statute.
Additionally, while there are no current special IGs under the definition used in this report, information on recent special IGs is included in this table for reference.
a. Includes IGs for the Central Intelligence Agency and Intelligence Community.
b. Includes the IGs for the Architect of the Capitol (AOC), Government Accountability Office, Government Publishing Office (GPO), Library of Congress (LOC), and
U.S. Capitol Police (USCP).
c. 2 U.S.C. §1909(b)(1) (UCSP IG); 2 U.S.C. §1808(c)(1)(A) (AOC IG).
d. 39 U.S.C. §202(e)(2).
e. 39 U.S.C. §202(e)(3).
f.
2 U.S.C. §1909(b)(3).
g. Pursuant to 2 U.S.C. §1909(b)(3), the Capital Police Board must communicate the reasons for removing the USCP IG prior to the end of his/her term to the
Committee on House Administration, Senate Committee on Rules and Administration, and House and Senate Committees on Appropriations.
h. The committees include the Committee on House Administration, Senate Committee on Rules and Administration, and House and Senate Committees on
Appropriations. See 2 U.S.C. §1909(b)(3).
i.
39 U.S.C. §202(e)(2).
j.
2 U.S.C. §1909(b)(2).
k. The authorizing statute for the GPO IG states, “Any authority to make payments under this title [enacting this chapter and provisions set out as notes under
Sections 101 and 3901 of this title] shall be effective only to such extent as provided in appropriations Acts.” See P.L. 100-504, Title II, §205, 102 Stat. 2531; 39
U.S.C. §3901 note.
l.
In practice, the LOC IG has compiled and submitted stand-alone annual budget estimates. In recent years, the House and Senate Committees on Appropriations
have called for legislative branch agency budget requests to include separate sections for IG budget estimates. U.S. Congress, Conference Committee, conference
report to accompany H.R. 5895, 115th Cong., 2nd sess., H.Rept. 115-929, p. 201; and U.S. Congress, Senate Committee on Appropriations, report to accompany S.
1648, 115th Cong., 1st sess., S.Rept. 115-137, p. 5.
CRS-37
m.
n.
o.
CRS-38
In practice, SIGAR and SIGTARP have compiled and submitted stand-alone annual budget estimates for their respective offices.
In practice, the President’s annual budget submission has historically provided separate accounts for both SIGAR and SIGTARP OIGs.
These include government corporations defined in 31 U.S.C. §9101. According to a CIGIE report, intelligence community IGs do not issue public top management
and performance challenges reports. See CIGIE, Top Management and Performance Challenges Facing Multiple Federal Agencies, April 2018, p. 1,
https://www.oversight.gov/sites/default/files/oig-reports/CIGIE_Top_Challenges_Report_April_2018.pdf.
Statutory Inspectors General in the Federal Government: A Primer
Author Information
Ben Wilhelm
Analyst in Government Organization and
Management
Acknowledgments
The original author of this report is former CRS analyst Kathryn Francis. Graphics and tables in this report
were designed by Amber Wilhelm, Visual Information Specialist.
Disclaimer
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Congressional Research Service
R45450 · VERSION 14 · UPDATED
39
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