Respondents Brief — W. Clark Aposhian, Petitioner v. Merrick B. Garland, Attorney General, et al.

Supreme Court briefNov 3, 2021

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No. 21-159

In the Supreme Court of the United States

W. CLARK APOSHIAN, PETITIONER

v.

MERRICK B. GARLAND, ATTORNEY GENERAL, ET AL.

ON PETITION FOR A WRIT OF CERTIORARI

TO THE UNITED STATES COURT OF APPEALS

FOR THE TENTH CIRCUIT

BRIEF FOR THE RESPONDENTS IN OPPOSITION

ELIZABETH B. PRELOGAR

Solicitor General

Counsel of Record

BRIAN M. BOYNTON

Acting Assistant Attorney

General

MARK B. STERN

MICHAEL S. RAAB

ABBY C. WRIGHT

BRAD HINSHELWOOD

KYLE T. EDWARDS

Attorneys

Department of Justice

Washington, D.C. 20530-0001

SupremeCtBriefs@usdoj.gov

(202) 514-2217

QUESTION PRESENTED

Whether the court of appeals correctly determined

that the district court did not abuse its discretion in

denying petitioner’s request for a preliminary injunction in this challenge to a final rule interpreting the

term “machinegun,” 26 U.S.C. 5845(b), to encompass

devices known as bump stocks, which permit users to

fire a semiautomatic rifle continuously with a single pull

of the trigger.

(I)

TABLE OF CONTENTS

Page

Opinions below .............................................................................. 1

Jurisdiction .................................................................................... 1

Statement ...................................................................................... 1

Argument..................................................................................... 14

A. Petitioner has failed to show a likelihood of success ... 15

B. Petitioner does not identify any division of

authority warranting review at this time...................... 21

C. Petitioner’s Chevron questions do not warrant this

Court’s review, especially in this case ........................... 23

Conclusion ................................................................................... 31

TABLE OF AUTHORITIES

Cases:

Abramski v. United States, 573 U.S. 169 (2014) ................ 27

Akins v. United States, 312 Fed. Appx. 197

(11th Cir.), cert. denied, 557 U.S. 942 (2009) ........... 5, 7, 17

Amaya v. Rosen, 986 F.3d 424 (4th Cir. 2021) ................... 24

Azar v. Allina Health Servs.,

139 S. Ct. 1804 (2019) ......................................................... 20

Babb v. Secretary, Dep’t of Veterans Affairs,

992 F.3d 1193 (11th Cir. 2021) ........................................... 24

Babbitt v. Sweet Home Chapter of Communities for

a Great Oregon, 515 U.S. 687 (1995) ..................... 11, 26, 27

CFTC v. Erskine, 512 F.3d 309 (6th Cir. 2008) .................. 25

Cargill v. Barr, 502 F. Supp. 3d 1163

(W.D. Tex. 2020), appeal pending,

No. 20-51016 (5th Cir. argued Oct. 6, 2021) ............... 22, 23

Chevron U.S.A. Inc. v. Natural Res. Def. Council,

Inc., 467 U.S. 837 (1984) ................................... 11, 12, 14, 26

Chrysler Corp. v Brown, 441 U.S. 281 (1979) ..................... 20

City of Arlington v. FCC, 569 U.S. 290 (2013) .............. 25, 26

(III)

IV

Cases—Continued:

Page

Crandon v. United States, 494 U.S. 152 (1990) .................. 27

Edelman v. Lynchburg Coll., 535 U.S. 106 (2002) ............. 30

Esquivel-Quintana v. Lynch,

137 S. Ct. 1562 (2016) ......................................................... 27

Guedes v. Bureau of Alcohol, Tobacco, Firearms &

Explosives:

920 F.3d 1 (D.C. Cir. 2019), cert. denied,

140 S. Ct. 789 (2020) ............................................ 21, 23

140 S. Ct. 789 (2020) .................................................. 15, 30

Gun Owners of Am., Inc. v. Garland:

992 F.3d 446 (6th Cir. 2021) ........................................ 22

2 F.4th 576 (6th Cir. 2021) .............................................. 22

HollyFrontier Cheyenne Ref., LLC v. Renewable

Fuels Ass’n, 141 S. Ct. 2172 (2021) ................................... 25

Kisor v. Wilkie, 139 S. Ct. 2400 (2019) ................................ 20

Loving v. United States, 517 U.S. 748 (1996) ..................... 28

McCutchen v. United States, 14 F.4th 1355

(Fed. Cir. 2021) ................................................................... 22

New York v. United States Dep’t of Justice,

951 F.3d 84 (2d Cir. 2020), cert. dismissed,

141 S. Ct. 1291 (2021) ......................................................... 24

Perez v. Mortgage Bankers Ass’n,

575 U.S. 92 (2015) ........................................................... 9, 20

Shalala v. Guernsey Mem. Hosp.,

514 U.S. 87 (1995) ............................................................... 20

Sierra Club v. EPA, 252 F.3d 943 (8th Cir. 2001) .............. 25

Staples v. United States, 511 U.S. 600 (1994) ..................... 17

United States v. Alkazahg,

No. 202000087, 2021 WL 4058360

(N.-M. Ct. Crim. App. Sept. 7, 2021)................................. 22

United States v. Apel, 571 U.S. 359 (2014) .......................... 27

United States v. Grimaud, 220 U.S. 506 (1911) ................. 28

V

Cases—Continued:

Page

United States v. Mead Corp., 533 U.S. 218 (2001) ........... 20

United States v. O’Hagan, 521 U.S. 642 (1997) .................. 26

United States v. Olofson, 563 F.3d 652 (7th Cir.),

cert. denied, 558 U.S. 948 (2009) ....................................... 19

Virginia Military Inst. v. United States,

508 U.S. 946 (1993).............................................................. 30

Wisniewski v. United States, 353 U.S. 901 (1957) ............. 24

Statutes, regulations, and rule:

Act of June 26, 1934, ch. 757, 48 Stat. 1236 ........................... 2

Administrative Procedure Act, 5 U.S.C. 701 et seq. .......... 9

Clean Air Act, 42 U.S.C. 7401 et seq.:

42 U.S.C. 7413(c)(1) (1982) ............................................. 26

42 U.S.C. 7502(a)(1) (1982) ............................................. 26

42 U.S.C. 7502(b)(6) (1982) ............................................. 26

Firearms Owners’ Protection Act,

Pub. L. No. 99-308, 100 Stat. 449:

§ 101(6), 100 Stat. 450 (18 U.S.C. 921(a)(23)).................. 2

§ 102(9), 100 Stat. 452-453 (18 U.S.C. 922(o)) ................. 2

Gun Control Act of 1968, Pub. L. No. 90-618,

Tit. II, sec. 201, § 5845(b), 82 Stat. 1231 ............................. 2

Immigration and Nationality Act, 8 U.S.C. 1101

et seq.:

8 U.S.C. 1101(a)(43)(A) ................................................... 27

National Firearms Act, 26 U.S.C. 5801 et seq.................... 1

26 U.S.C. 5841(c) ............................................................... 3

26 U.S.C. 5845(b) .................................................... passim

Public Safety and Recreational Firearms Use

Protection Act, Pub. L. No. 103-322, Tit. XI,

Subtit. A, 108 Stat. 1996:

§ 110102, 108 Stat. 1996-1998 ........................................... 3

VI

Statutes, regulations, and rule—Continued:

Page

§ 110105, 108 Stat. 2000 .................................................... 3

10 U.S.C. 867 .......................................................................... 23

10 U.S.C. 867(a)(2) ................................................................. 23

15 U.S.C. 78ff(a) ..................................................................... 26

15 U.S.C. 78n(e) ..................................................................... 26

16 U.S.C. 1540(b)(1) ............................................................... 27

18 U.S.C. 921(a)(30) (2000) .................................................... 3

18 U.S.C. 922(v) (2000) ............................................................ 3

18 U.S.C. 926(a) ....................................................................... 7

26 U.S.C. 7801(a)(2)(A)(i) ........................................................ 7

26 U.S.C. 7805(a) ..................................................................... 7

27 C.F.R.:

Section 447.11 ................................................................ 7, 8

Section 478.11 ................................................................ 7, 8

Section 479.11 ................................................................ 7, 8

28 C.F.R.:

Section 0.130(a)(1) ............................................................. 7

Section 0.130(a)(2) ............................................................. 7

CAAF R. 19(a)(1) ................................................................... 23

Miscellaneous:

Bureau of Alcohol, Tobacco, Firearms &

Explosives, U.S. Dep’t of Justice:

ATF Ruling 2006-2 (Dec. 13, 2006),

https://go.usa.gov/xpbEX ........................................... 5

National Firearms Act Handbook (Apr. 2009) ....... 3, 16

82 Fed. Reg. 60,929 (Dec. 26, 2017) .................................... 6

83 Fed. Reg. 7949 (Feb. 23, 2018) ....................................... 6

83 Fed. Reg. 13,442 (Mar. 29, 2018) ....................................... 7

83 Fed. Reg. 66,514 (Dec. 26, 2018) ............................ passim

H.R. Rep. No. 495, 99th Cong., 2d Sess. (1986) .................... 2

VII

Miscellaneous—Continued:

Page

H.R. Rep. No. 1780, 73d Cong., 2d Sess. (1934) ................. 17

National Firearms Act: Hearings Before the House

Comm. on Ways & Means on H.R. 9066,

73d Cong., 2d Sess. (1934) ............................................ 17, 18

S. Rep. No. 1444, 73d Cong., 2d Sess. (1934) ...................... 17

In the Supreme Court of the United States

No. 21-159

W. CLARK APOSHIAN, PETITIONER

v.

MERRICK B. GARLAND, ATTORNEY GENERAL, ET AL.

ON PETITION FOR A WRIT OF CERTIORARI

TO THE UNITED STATES COURT OF APPEALS

FOR THE TENTH CIRCUIT

BRIEF FOR THE RESPONDENTS IN OPPOSITION

OPINIONS BELOW

The opinion of the court of appeals (Pet. App. 1a-58a)

is reported at 958 F.3d 969. An order of the court granting rehearing en banc (Pet. App. 74a-77a) is reported at

973 F.3d 1151. A subsequent order of the court vacating

the grant of rehearing, reinstating the panel opinion, and

reissuing the judgment (Pet. App. 78a-115a) is reported

at 989 F.3d 890. The opinion of the district court (Pet.

App. 59a-73a) is reported at 374 F. Supp. 3d 1145.

JURISDICTION

The judgment of the court of appeals was entered on

March 5, 2021. The petition for a writ of certiorari was

filed on August 2, 2021. The jurisdiction of this Court is

invoked under 28 U.S.C. 1254(1).

STATEMENT

1. The National Firearms Act, 26 U.S.C. 5801 et seq.,

defines a “machinegun” as “any weapon which shoots, is

(1)

2

designed to shoot, or can be readily restored to shoot,

automatically more than one shot, without manual reloading, by a single function of the trigger.” 26 U.S.C.

5845(b). Since 1968, that definition has also encompassed parts that can be used to convert a weapon into

a machinegun. See Gun Control Act of 1968, Pub. L. No.

90-618, Tit. II, sec. 201, § 5845(b), 82 Stat. 1231. A “machinegun” thus includes “the frame or receiver of any

such weapon, any part designed and intended solely and

exclusively, or combination of parts designed and intended, for use in converting a weapon into a machinegun, and any combination of parts from which a

machinegun can be assembled if such parts are in the

possession or under the control of a person.” 26 U.S.C.

5845(b).

Congress first regulated the sale or possession of

machineguns in 1934 as part of the internal revenue

laws. See Act of June 26, 1934, ch. 757, 48 Stat. 1236.

In 1986, Congress amended Title 18 of the U.S. Code to

prohibit the sale and possession of new machineguns,

making it a crime “to transfer or possess a machinegun”

unless a governmental entity is involved in the transfer

or possession. Firearms Owners’ Protection Act, Pub.

L. No. 99-308, § 102(9), 100 Stat. 452-453 (18 U.S.C.

922(o)). In enacting that criminal prohibition, Congress

incorporated the definition of “machinegun” from the

National Firearms Act. § 101(6), 100 Stat. 450 (18

U.S.C. 921(a)(23)). The 1986 amendments responded in

part to evidence before Congress of “the need for more

effective protection for law enforcement officers from

the proliferation of machine guns.” H.R. Rep. No. 495,

99th Cong., 2d Sess. 7 (1986).

The Department of Justice regularly issues guidance

concerning whether particular weapons or devices con-

3

stitute machineguns as defined above. In particular,

the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) encourages manufacturers to submit novel

weapons or devices to the agency, on a voluntary basis,

for ATF to assess whether the weapon or device should

be classified as a machinegun or other registered firearm under the National Firearms Act. See ATF, U.S.

Dep’t of Justice, National Firearms Act Handbook 41

(Apr. 2009) (NFA Handbook). The classification process enables ATF to provide manufacturers with “the

agency’s official position concerning the status of the

firearms under Federal firearms laws,” to assist manufacturers with “avoid[ing] an unintended classification

and violations of the law” before a manufacturer “go[es]

to the trouble and expense of producing” the weapon or

device. Ibid.; cf. 26 U.S.C. 5841(c) (requiring manufacturers to “obtain authorization” before making a covered firearm and to register “the manufacture of a firearm”). ATF has made clear, however, that “classifications are subject to change if later determined to be erroneous or impacted by subsequent changes in the law

or regulations.” NFA Handbook 41.

2. a. In 2004, a federal ban on certain semiautomatic “assault weapons” expired.1 Since that time, ATF

has received a growing number of classification requests from inventors and manufacturers seeking to

produce “devices that permit shooters to use semiautomatic rifles to replicate automatic fire,” but “without

converting these rifles into ‘machineguns.’ ” 83 Fed.

Reg. 66,514, 66,515-66,516 (Dec. 26, 2018); see id. at

18 U.S.C. 921(a)(30), 922(v) (2000). Those provisions had been

enacted in 1994 with a ten-year sunset provision. See Public Safety

and Recreational Firearms Use Protection Act, Pub. L. No. 103-322,

Tit. XI, Subtit. A, §§ 110102, 110105, 108 Stat. 1996-1998, 2000.

1

4

66,516 (“Shooters use [these] devices with semiautomatic firearms to accelerate the firearms’ cyclic firing

rate to mimic automatic fire.”). Whether such devices

fall within the statutory definition of a “machinegun,”

26 U.S.C. 5845(b), turns on whether they allow a shooter

to fire “automatically more than one shot * * * by a

single function of the trigger,” ibid.

One such type of device is generally referred to as a

“bump stock.” ATF first encountered bump stocks in

2002, when it received a classification request for the

“Akins Accelerator.” 83 Fed. Reg. at 66,517. The Akins

Accelerator, which attached to a standard semiautomatic rifle, used a spring to harness the recoil energy of

each shot, causing “the firearm to cycle back and forth,

impacting the trigger finger” repeatedly after the first

pull of the trigger. Ibid. Thus, by pulling the trigger

once, the shooter “initiated an automatic firing sequence” that was advertised as firing “approximately

650 rounds per minute.” Ibid.

ATF initially declined to classify the Akins Accelerator as a machinegun because the agency “interpreted

the statutory term ‘single function of the trigger’ to refer to a single movement of the trigger.” 83 Fed. Reg.

at 66,517. In 2006, however, ATF revisited that determination and concluded that “the best interpretation of

the phrase ‘single function of the trigger’ includes a ‘single pull of the trigger.’ ” Ibid. The agency explained

that the Akins Accelerator created “a weapon that ‘with

a single pull of the trigger initiates an automatic firing

cycle that continues until the finger is released, the

weapon malfunctions, or the ammunition supply is exhausted.’ ” Ibid. (brackets and citation omitted). Accordingly, ATF reclassified the device as a machinegun

under the statute. See ibid.

5

When the inventor of the Akins Accelerator challenged ATF’s classification, the Eleventh Circuit upheld the determination. It explained that interpreting

the phrase “single function of the trigger” in 26 U.S.C.

5845(b) to mean “ ‘single pull of the trigger’ is consonant

with the statute and its legislative history,” and that

“[t]he plain language of the statute defines a machinegun as any part or device that allows a gunman to

pull the trigger once and thereby discharge the firearm

repeatedly.” Akins v. United States, 312 Fed. Appx.

197, 200-201 (11th Cir.) (per curiam), cert. denied, 557

U.S. 942 (2009).

In 2006, in anticipation of similar future classification

requests, ATF issued a public ruling announcing its interpretation of “single function of the trigger.” ATF

Ruling 2006-2 (Dec. 13, 2006).2 ATF explained that, after

reviewing the text of the National Firearms Act and its

legislative history, the agency had concluded that the

phrase “single function of the trigger” includes a “single

pull of the trigger.” Id. at 2. When ATF reclassified the

Akins Accelerator, however, it also advised owners of the

device that “removal and disposal of the internal spring

* * * would render the device a non-machinegun under

the statutory definition,” on the theory that, without the

spring, the device would no longer operate “automatically.” 83 Fed. Reg. at 66,517.

ATF soon received classification requests for bump

stock devices that did not include internal springs.

Those bump stocks replace the standard stock on an ordinary semiautomatic firearm. Unlike a regular stock,

a bump stock channels the recoil from the first shot into

a defined path, allowing the weapon contained within

2

https://go.usa.gov/xpbEX.

6

the stock to slide back a short distance—approximately

an inch and a half—and shifting the trigger away from

the shooter’s trigger finger. 83 Fed. Reg. at 66,532.

This separation allows the firing mechanism to reset.

Ibid. When the shooter maintains constant forward

pressure on the weapon’s barrel-shroud or fore-grip,

the weapon slides back along the bump stock, causing

the trigger to “bump” the shooter’s stationary finger

and fire another bullet. Ibid. In a series of classification decisions between 2008 and 2017, ATF concluded

that such devices did not enable a gun to fire “automatically” and were therefore not “machineguns.” Id. at

66,517.

b. In 2017, a shooter armed with semiautomatic

weapons and bump stock devices of the type at issue here

murdered 58 people and wounded 500 more in Las Vegas. 83 Fed. Reg. at 66,516. The Las Vegas mass shooting led ATF to review its prior classifications of bump

stock devices. Ibid. In December 2017, ATF published

an advance notice of proposed rulemaking, seeking public comment on “the scope and nature of the market for

bump stock type devices.” 82 Fed. Reg. 60,929, 60,930

(Dec. 26, 2017).

On February 20, 2018, after the comment period had

ended, President Trump issued a memorandum concerning bump stocks to the Attorney General. See 83 Fed.

Reg. 7949 (Feb. 23, 2018). The President instructed the

Department of Justice “to dedicate all available resources to complete the review of the comments received, and, as expeditiously as possible, to propose for

notice and comment a rule banning all devices that turn

legal weapons into machineguns.” Ibid.

On March 29, 2018, the Attorney General published

a notice of proposed rulemaking regarding amendments

7

to the definition of “machinegun” in three ATF regulations, 27 C.F.R. 447.11, 478.11, and 479.11. See 83 Fed.

Reg. 13,442, 13,457 (Mar. 29, 2018). The notice stated

that ATF’s post-2006 classification letters addressing

bump stock devices without internal springs did “not reflect the best interpretation of the term ‘machinegun.’ ”

Id. at 13,443. The notice further stated that ATF had

“applied different understandings of the term ‘automatically’ ” over time in reviewing bump stock devices and

that the agency had “authority to ‘reconsider and rectify’ potential classification errors.” Id. at 13,44513,446 (quoting Akins, 312 Fed. Appx. at 200); see id. at

13,447 (observing that ATF’s classifications between

2008 and 2017 “did not reflect the best interpretation of

the term ‘automatically’ ”). The notice proposed to

“clarify that all bump-stock-type devices are ‘machineguns’ ” under the applicable statutory definitions.

Id. at 13,443. The notice elicited more than 186,000

comments. See 83 Fed. Reg. at 66,519.

ATF published a final rule on December 26, 2018.

83 Fed. Reg. at 66,514.3 The final rule—which is at issue

in this case—amended ATF’s regulations to address the

terms “single function of the trigger” and “automatically” as used in the definition of “machinegun,” in order to clarify that bump stock devices are machineguns

under 26 U.S.C. 5845(b). 83 Fed. Reg. at 66,553-66,554.

In the preamble to the rule, the agency stated that it

continued to adhere to its previous understanding that

the phrase “ ‘single function of the trigger’ ” includes a

By delegation, ATF may exercise the Attorney General’s authority to prescribe rules and regulations to carry out the National

Firearms Act, the Gun Control Act, and other firearms legislation.

See 18 U.S.C. 926(a); 26 U.S.C. 7801(a)(2)(A)(i), 7805(a); 28 C.F.R.

0.130(a)(1) and (2).

3

8

“ ‘single pull of the trigger,’ ” while clarifying that the

phrase also includes motions “analogous” to a single

pull. Id. at 66,515. The agency also determined that the

term “automatically” includes functioning “as the result

of a self-acting or self-regulating mechanism that allows

the firing of multiple rounds through a single pull of the

trigger,” notwithstanding ATF’s erroneous prior bumpstock classifications. Id. at 66,519; see id. at 66,531. In

its view, those definitions “represent the best interpretation of the statute.” Id. at 66,521; see id. at 66,55366,554 (amending 27 C.F.R. 447.11, 478.11, and 479.11

to incorporate those definitions of “single function of

the trigger” and “automatically”).

The agency further explained that, upon review, it

had concluded that bump stocks qualify as machineguns

under those definitions. Bump stocks enable a shooter

to engage in a firing sequence that is “automatic.”

83 Fed. Reg. at 66,531. As the shooter’s trigger finger

remains stationary on the ledge provided by the design

of the device and the shooter applies constant forward

pressure with the non-trigger hand on the barrelshroud or fore-grip of the weapon, the firearm’s recoil

energy can be directed into a continuous back-and-forth

cycle without “the need for the shooter to manually capture, harness, or otherwise utilize this energy to fire additional rounds.” Id. at 66,532. A bump stock thus constitutes a “self-regulating” or “self-acting” mechanism

that allows the shooter to attain continuous firing after

a single pull of the trigger and, accordingly, is a machinegun. Ibid.; see id. at 66,514, 66,518.

Consistent with the amended regulations, ATF rescinded its prior letters classifying certain bump stocks

as not machineguns. See 83 Fed. Reg. at 66,514, 66,523,

66,530-66,531, 66,549. The agency also provided in-

9

structions for “[c]urrent possessors” of bump stocks “to

undertake destruction of the devices” or to “abandon

[them] at the nearest ATF office” to avoid liability under the statute, and it specified that the rule would not

take effect until ninety days after publication in the

Federal Register. Id. at 66,530. The agency stated that

individuals who complied with the rule “will not be in

violation of the law or incarcerated as a result.” Id. at

66,539.

3. Petitioner purchased a bump stock before ATF

published its final rule. Pet. App. 8a. In January 2019,

petitioner brought this action under the judicial review

provisions of the Administrative Procedure Act (APA),

5 U.S.C. 701 et seq., seeking to set aside the final rule and

to enjoin it from taking effect. Pet. App. 8a, 63a.

On March 15, 2019, the district court denied petitioner’s motion for a preliminary injunction. Pet. App.

59a-73a. Petitioner had contended that ATF lacks rulemaking authority to issue any binding interpretations

of the statutory definition of “machinegun” and that the

interpretation adopted by the agency in the final rule

“conflict[s] with the statutory language.” Id. at 65a.

The court found that petitioner was unlikely to succeed

on either ground. Id. at 64a-65a. As to the first, the

court explained that the final rule “is merely interpretive in nature.” Id. at 66a n.7; see Perez v. Mortgage

Bankers Ass’n, 575 U.S. 92, 97 (2015) (explaining that

“[i]nterpretive rules ‘do not have the force and effect of

law’ ”) (citation omitted). And the court observed that

petitioner himself did “not dispute that the ATF, under

the direction of the Attorney General, is empowered to

interpret” the relevant statutes. Pet. App. 66a.

The district court also determined that ATF’s final

rule “represents the best interpretation of the statute.”

10

Pet. App. 71a; see id. at 67a-71a. In particular, the court

determined that the phrase “single function of the trigger” in the definition of “machinegun,” 26 U.S.C.

5845(b), is best understood to include a “single pull of

the trigger,” Pet. App. 68a—and not, as petitioner had

contended, to refer exclusively to a single “mechanical

movement of the trigger,” ibid. The court also agreed

with the final rule’s interpretation of the term “automatically” to mean “as the result of a self-acting or selfregulating mechanism.” Id. at 69a. That definition, the

court explained, was “borrowed, nearly word-for-word,

from dictionary definitions contemporaneous to the

[National Firearms Act]’s enactment” and “accords

with past judicial interpretation.” Id. at 69a-70a. The

court thus rejected petitioner’s argument that

“[b]ecause bump-stock-type devices require constant

forward pressure by the shooter’s non-trigger hand,”

the weapon “does not fire ‘automatically.’ ” Id. at 70a.

The court observed that “even weapons uncontroversially classified as machine guns require at least some

ongoing effort by an operator,” and that petitioner did

“not argue that the constant rearward pressure applied

by a shooter’s trigger finger in order to continue firing

a machine gun means that it does not fire ‘automatically.’ ” Ibid. The court declined petitioner’s invitation

to draw an “atextual line” between such devices and

bump stocks, all of which require “some * * * ongoing

physical actuation” to fire continuously. Id. at 70a-71a.

4. The court of appeals affirmed, with Judge Carson

dissenting. Pet. App. 1a-58a. The court later granted a

petition for rehearing en banc and vacated the panel

opinion. Id. at 74a-77a. After further briefing and argument, the court vacated the grant of rehearing and

11

reinstated the panel opinion, with Judge Carson and

four other judges dissenting. Id. at 78a-115a.

a. The panel majority, unlike the district court and

contrary to ATF’s position in the litigation, concluded

that the final rule is a “legislative rule,” by which ATF

purportedly “intended to change the legal rights and

obligations of bump-stock owners.” Pet. App. 13a-14a.

The majority emphasized that certain statements in the

preamble to the final rule contemplated that possession

of a bump stock would become unlawful only after the

rule took effect; that the preamble discussed Chevron

U.S.A. Inc. v. Natural Resources Defense Council, Inc.,

467 U.S. 837 (1984); and that the final rule was published in the Code of Federal Regulations. See Pet.

App. 14a-15a.

The panel majority then determined that this

Court’s decision in Chevron and its progeny provided

the appropriate “framework” for evaluating petitioner’s

challenge to the final rule. Pet. App. 12a. Petitioner

had contended that, although the rule (in his view) is a

legislative rule, Chevron does not apply because the

government had “waived” that doctrine or, alternatively, because “Chevron deference is inapplicable

where the government interprets a statute that imposes

criminal liability.” Id. at 16a, 19a. The majority rejected both contentions. It stated that an “agency’s say

so” does not control whether the court of appeals itself

may independently determine that Chevron is applicable, id. at 16a, and that this Court’s precedent is inconsistent with petitioner’s proposed “general rule against

applying Chevron to agency interpretations of statutes

with criminal law implications,” id. at 19a (discussing

Babbitt v. Sweet Home Chapter of Communities for a

Great Oregon, 515 U.S. 687 (1995)).

12

Applying Chevron, the panel majority held that the

statute is ambiguous on the “precise question at issue,”

Pet. App. 24a (quoting Chevron, 467 U.S. at 842), and

that ATF had reasonably interpreted the terms “automatically” and “single function of the trigger” to cover

bump stocks. See id. at 25a-33a. The majority observed

that ATF’s interpretation of the phrase “ ‘single function of the trigger’ * * * accords with how some courts

have read the statute,” as well as with how those words

were understood at the time of the enactment of the National Firearms Act. Id. at 31a. The majority further

observed that the rule’s interpretation of “automatically” accords with the “everyday understanding of the

word ‘automatic.’ ” Id. at 32a (citation omitted). The

majority also viewed ATF’s interpretation as properly

“focus[ing] the inquiry about what needs to be automated precisely where the statute does: the ability of

the trigger function to produce ‘more than one shot,

without manual reloading.’ ” Id. at 33a (citation omitted).

Finally, the panel majority held that petitioner had

not only failed to demonstrate a likelihood of success on

the merits but also had “not met the other prerequisites

for preliminary relief.” Pet. App. 34a. In particular, the

majority rejected petitioner’s theory that he could

demonstrate irreparable harm by relying on his allegation that the final rule “was issued in violation of * * *

the separation of powers.” Ibid. The majority noted

that petitioner’s opening brief on appeal had advanced

only statutory arguments and that, in any event, the

“generalized” harm of a purported violation of the constitutional separation of powers would be insufficient

for petitioner to meet his burden of showing that he personally would suffer irreparable injury absent an in-

13

junction. Id. at 34a-35a.4 The majority also concluded

that the remaining preliminary-injunction factors favored the government, noting that the final rule “supports the safety of the public in general and the safety

of law enforcement officers and first responders.” Id.

at 37a (citation omitted).

b. Judge Carson dissented. Pet. App. 38a-58a. He

would have held that the statutory definition of “machinegun” unambiguously excludes a semiautomatic rifle equipped with a nonmechanical bump stock, on the

theory that “the trigger on such a firearm must still

‘function’ every time a shot is fired,” even though the

shooter need only pull the trigger a single time to fire

continuously. Id. at 39a. In his view, such a weapon also

does not fire more than one shot “automatically”

through a single function of the trigger “[b]ecause the

user of the firearm must also apply constant forward

pressure with his or her nontrigger hand.” Id. at 40a

(emphasis omitted). Having concluded that the statute

is unambiguous, Judge Carson also stated that he would

have declined to apply Chevron because the government had “disavowed any reliance on Chevron” in the

litigation, id. at 52a, and because the “definition of ‘machinegun’ in the [National Firearms Act] ‘carries the

possibility of criminal sanctions,’ ” id. at 53a (citation

omitted).

c. On September 4, 2020, the court of appeals

granted petitioner’s motion for rehearing en banc, vacated the panel opinion, and ordered supplemental

In the district court, the government had stated that the loss of

petitioner’s bump stock would be irreparable, and the district court

had treated the irreparable-harm factor as undisputed. Pet. App.

36a, 64a. As the court of appeals explained, however, petitioner did

not advance any “loss-of-property argument” on appeal. Id. at 36a.

4

14

briefing addressing several questions about the final

rule and Chevron. Pet. App. 74a-77a. After further

briefing and argument, however, the court determined

that rehearing had been improvidently granted; the

court therefore vacated its rehearing order, reinstated

the panel opinion, and reissued the judgment. Id. at

78a-80a. Five judges dissented. Id. at 80a-115a. The

dissenting judges would have reversed, principally on

the theory that the statutory definition unambiguously

excludes bump stocks. See id. at 82a, 86a-90a (Tymkovich, J., dissenting); id. at 107a (Eid, J., dissenting);

id. at 111a (Carson, J., dissenting).

ARGUMENT

Petitioner contends (Pet. 3-4) that the court of appeals erred in applying Chevron U.S.A. Inc. v. Natural

Resources Defense Council, Inc., 467 U.S. 837 (1984), to

uphold ATF’s final rule, in which the agency interpreted

the definition of “machinegun” in the National Firearms

Act, 26 U.S.C. 5845(b), to encompass bump stocks—

devices designed to permit semiautomatic rifles to fire

continuously with a single pull of the trigger. Petitioner

does not ask this Court to address directly whether

bump stocks are machineguns under the statute. Instead, petitioner urges (Pet. 22) the Court to grant review of several abstract questions concerning Chevron,

including whether an agency may “waive” Chevron deference and whether Chevron applies to agency interpretations of statutes with criminal penalties. See Pet.

15-32.

This case, however, does not turn on the application

of Chevron. As the district court correctly held, ATF’s

interpretation reflects the best understanding of the

statutory language. Whether the agency’s interpretation is eligible for Chevron deference is therefore aca-

15

demic. Moreover, the decision below does not conflict

with any decision of this Court or another court of appeals. The purported “circuit split” (Pet. 4) invoked by

petitioner rests on a vacated decision by a divided panel

of the Sixth Circuit, which has granted rehearing en banc

to consider a challenge to ATF’s final rule. In light of

those and other still-pending proceedings, petitioner

identifies no compelling basis to grant review now.

This case would also be an unsuitable vehicle in which

to address issues concerning Chevron. Neither petitioner nor the government accepts the premise that the

final rule was an exercise of delegated authority to resolve a statutory ambiguity. To the contrary, ATF promulgated the rule to advise the public of ATF’s own corrected interpretation of the “machinegun” definition, not

to impose any new legal obligations that the statutory

scheme itself did not already create. Petitioner’s Chevron questions would also make no practical difference to

the result in this case because the court of appeals separately held that petitioner failed to carry his burden of

establishing any irreparable harm. The Court recently

denied a petition for a writ of certiorari raising similar

questions in a similar interlocutory posture. Guedes v.

ATF, 140 S. Ct. 789 (2020) (No. 19-296). The same course

is warranted here.

A. Petitioner Has Failed To Show A Likelihood Of Success

The court of appeals correctly concluded that the district court did not abuse its discretion in denying petitioner’s motion for a preliminary injunction because petitioner has failed to demonstrate a likelihood of success

on the merits. Petitioner principally contended below

that the final rule is inconsistent with the statute. Pet.

App. 10a. As ATF recognized, however, the terms “automatically” and “single function of the trigger” in the

16

definition of “machinegun,” 26 U.S.C. 5845(b), are best

understood to encompass bump stock devices, which are

designed to permit a semiautomatic weapon to be fired

continuously with a single pull of the trigger.

1. As explained above (see p. 3, supra), ATF has established a process that allows inventors and manufacturers to obtain a classification of their devices that will

provide “the agency’s official position concerning the

status of the firearms under Federal firearms laws” in

order to assist manufacturers with “avoid[ing] an unintended classification and violations of the law” before a

manufacturer “go[es] to the trouble and expense of producing” the weapon or device. NFA Handbook 41. ATF

has made explicit, however, that “classifications are

subject to change if later determined to be erroneous or

impacted by subsequent changes in the law or regulations.” Ibid. ATF regularly receives classification requests for devices with rates of fire comparable to machineguns. In evaluating how to classify those devices,

the agency considers whether they shoot (1) “automatically more than one shot” (2) “by a single function of the

trigger.” 26 U.S.C. 5845(b).

In 2002, when ATF first evaluated the Akins Accelerator, the agency initially concluded that the “single

function” language was not satisfied where the device is

configured so that the trigger repeatedly bumps the

shooter’s stationary finger. 83 Fed. Reg. at 66,517. In

reclassifying that device in 2006, however, ATF recognized that a “single function of the trigger” includes a

“single pull of the trigger.” See ibid. Like the bump

stocks at issue here, the Akins Accelerator bump stock

enabled the weapon to recoil within the stock, “permitting the trigger to lose contact with the finger” and reset itself. Ibid. “Springs in the Akins Accelerator then

17

forced the rifle forward, forcing the trigger against the

finger” in a back-and-forth cycle that enabled continuous firing. Ibid. The Akins Accelerator “was advertised

as able to fire approximately 650 rounds per minute.”

Ibid. In Akins v. United States, 312 Fed. Appx. 197 (per

curiam), cert. denied, 557 U.S. 942 (2009), the Eleventh

Circuit upheld ATF’s interpretation of “single function

of the trigger,” and ATF has applied that interpretation

consistently since then.

ATF’s interpretation of the phrase “single function

of the trigger” reflects the common-sense understanding of how most weapons are fired: by the shooter’s pull

on a curved metal trigger. See Staples v. United States,

511 U.S. 600, 602 n.1 (1994) (noting that the National

Firearms Act treats a weapon that “fires repeatedly

with a single pull of the trigger” as a machinegun, in

contrast to “a weapon that fires only one shot with each

pull of the trigger”). The same understanding was prevalent when Congress first enacted the definition of “machinegun” in 1934. The relevant committee report

noted that the legislation “contain[ed] the usual definition of machine gun as a weapon designed to shoot more

than one shot without reloading and by a single pull of

the trigger.” H.R. Rep. No. 1780, 73d Cong., 2d Sess. 2

(1934); accord S. Rep. No. 1444, 73d Cong., 2d Sess. 1-2

(1934) (reprinting House committee report’s “detailed

explanation” of the bill’s provisions, including the

quoted language). The then-president of the National

Rifle Association had proposed during earlier hearings

that a machinegun should be defined as a weapon

“which shoots automatically more than one shot without

manual reloading, by a single function of the trigger.”

National Firearms Act: Hearings Before the House

Comm. on Ways & Means on H.R. 9066, 73d Cong., 2d

18

Sess. 40 (1934) (statement of Karl T. Frederick, President, National Rifle Association of America). Explaining that proposal, he stated that “[t]he distinguishing

feature of a machine gun is that by a single pull of the

trigger the gun continues to fire as long as there is any

ammunition,” and that any weapon “which is capable of

firing more than one shot by a single pull of the trigger,

a single function of the trigger, is properly regarded, in

my opinion, as a machine gun.” Ibid.

The question under the statute is thus whether the

shooter initiates the automatic firing with a single function, not—as petitioner contended below—whether the

trigger moves after that initial function. With respect

to the typical protruding curved trigger on a semiautomatic rifle, the action that initiates the firing sequence

is the shooter’s pull on the trigger. On an unmodified

semiautomatic weapon, that single pull results in the

firing of a single shot. For a subsequent shot, the

shooter must release his pull on the trigger so that the

hammer can reset and the shooter can pull the trigger

again. But on a machinegun—including a weapon

equipped with a bump stock—that same single pull of

the trigger initiates a continuous process that fires bullets until the ammunition is exhausted. Once the trigger has performed its function of initiating the firing sequence in response to the shooter’s pull, the weapon

fires “automatically more than one shot, without manual

reloading,” 26 U.S.C. 5845(b). The fact that bump

stocks automate the back-and-forth movement of the

trigger rather than the internal movement of the hammer does not take them outside the statutory definition.

The only interpretive change in the 2018 rule concerns the term “automatically.” In reclassifying the

bump stocks at issue here, ATF recognized that it had

19

not previously provided “substantial or consistent legal

analysis regarding the meaning of the term ‘automatically.’ ” 83 Fed. Reg. at 66,518. The agency explained

that the crucial question was whether the “firing

sequence is ‘automatic,’ ” id. at 66,519, and that its prior

classification letters had either provided no analysis

of that issue or had erroneously focused on the absence

of “mechanical parts or springs” in concluding that certain bump stocks are not machineguns, id. at 66,518.

ATF explained in the rule that a weapon fires “ ‘automatically’ ” when it fires “as the result of a self-acting or

self-regulating mechanism that allows the firing of multiple rounds.” Id. at 66,554; accord United States v. Olofson, 563 F.3d 652, 658 (7th Cir.), cert. denied, 558 U.S.

948 (2009). A bump stock, by design, meets that definition. Its basic purpose is “to eliminate the need for the

shooter to manually capture, harness, or otherwise utilize th[e] [recoil] energy” of each shot “to fire additional

rounds,” by “ ‘directing the recoil energy of the discharged rounds into the space created by the sliding

stock,’ ” ensuring that the rifle moves in a “ ‘constrained

linear rearward and forward path[]’ ” to enable continuous fire. 83 Fed. Reg. at 66,532 (citation omitted).

2. As demonstrated above, ATF’s final rule correctly

interprets the component terms of the statutory definition of “machinegun,” correctly applies those interpretations to conclude that bump stocks are machineguns, and

persuasively explains that ATF’s prior classification of

those devices as non-machineguns was erroneous. The

district court was therefore correct to conclude that the

final rule reflects the “best interpretation” of the terms

“automatically” and “single function of the trigger” and

that petitioner is not likely to succeed in challenging the

rule as inconsistent with the statute. Pet. App. 67a-68a;

20

see id. at 71a. The court of appeals reached the same

result under Chevron, concluding that the disputed statutory language is ambiguous and that the final rule is a

reasonable resolution of that ambiguity. See id. at 24a33a. Although the court should not have applied Chevron, any analytical error made no difference to the result

below and does not warrant further review.

The court of appeals’ mistaken reliance on Chevron

was premised on viewing the final rule as a “legislative”

rule. Pet. App. 13a-16a. As this Court has explained,

legislative rules “have the ‘force and effect of law,’ ” while

interpretive rules do not. Perez v. Mortgage Bankers

Ass’n, 575 U.S. 92, 96 (2015) (quoting Chrysler Corp. v

Brown, 441 U.S. 281, 303 (1979)). Interpretive rules instead serve as a form of guidance, informing “the public

of [an] agency’s construction of the statutes and rules

which it administers.” Id. at 97 (quoting Shalala v.

Guernsey Mem. Hosp., 514 U.S. 87, 99 (1995)); see Azar

v. Allina Health Servs., 139 S. Ct. 1804, 1811 (2019); Kisor v. Wilkie, 139 S. Ct. 2400, 2420 (2019) (opinion of

Kagan, J.). Legislative rules are generally adopted

through notice-and-comment procedures and are generally eligible to receive Chevron deference. See, e.g.,

United States v. Mead Corp., 533 U.S. 218, 232 (2001).

The final rule here is interpretive, not legislative.

ATF’s rulemaking notice makes clear that the only

source of legal force for the prohibition on bump stocks

is Congress’s statutory ban on new machineguns, not

the rule itself. See, e.g., 83 Fed. Reg. at 66,529 (“[T]he

impetus for this rule is the Department’s belief, after a

detailed review, that bump-stock-type devices satisfy

the statutory definition of ‘machinegun.’ ”); ibid. (“ATF

must * * * classify devices that satisfy the statutory

definition of ‘machinegun’ as machineguns.”); id. at

21

66,535 (“[T]he Department has concluded that the [National Firearms Act] and [Gun Control Act] require regulation of bump-stock-type devices as machineguns.”).

Thus, ATF determined that bump stocks are machineguns under the statute, not that the agency had

discretionary authority under the statute to classify

them as machineguns.

In concluding otherwise, the court of appeals emphasized that the preamble to the final rule refers to Chevron; that the rule includes an effective date; and that

ATF published the rule in the Code of Federal Regulations. Pet. App. 14a-15a. None of those considerations,

alone or together, supports disregarding ATF’s own position that the rule is merely interpretive. The preamble’s discussion of Chevron establishes at most that the

agency believed its interpretation would be upheld in

litigation even if the statutory language were deemed to

be ambiguous; the agency included an “effective date”

to advise the public of the date on which it would begin

to enforce its revised interpretation; and publication of

a rule in the Code of Federal Regulations does not

thereby make the rule legislative. See Gov’t C.A. Br.

37-42. In any event, petitioner does not ask this Court

to address whether the rule is legislative or interpretive, and that question—which is highly specific to the

particulars of this ATF rulemaking—would not warrant

the Court’s review even if petitioner had sought it.

B. Petitioner Does Not Identify Any Division Of Authority

Warranting Review At This Time

Petitioner does not identify any conflict of authority

within the courts of appeals that would warrant this

Court’s review at the present time. ATF’s final rule has

been challenged in three other circuits. In Guedes v.

ATF, 920 F.3d 1 (2019), cert. denied, 140 S. Ct. 789

22

(2020), the D.C. Circuit upheld the final rule in an interlocutory appeal from the denial of a preliminary injunction. The Fifth Circuit is presently reviewing a decision

in which a district court likewise upheld the final rule

and denied any injunctive relief. See Cargill v. Barr,

502 F. Supp. 3d 1163, 1170-1171, 1198 (W.D. Tex. 2020),

appeal pending, No. 20-51016 (5th Cir. argued Oct. 6,

2021). As petitioner notes (Pet. 3-4), a divided panel of

the Sixth Circuit declined to afford the final rule Chevron deference and held it to be inconsistent with the

“best interpretation of § 5845(b)” in Gun Owners of

America, Inc. v. Garland, 992 F.3d 446, 450 (2021). But

the Sixth Circuit later granted the government’s petition

for rehearing en banc in that appeal and vacated the

panel decision. Gun Owners of Am., Inc. v. Garland,

2 F.4th 576, 577 (2021) (No. 19-1298). The en banc Sixth

Circuit heard oral argument on October 20, 2021.5

In United States v. Alkazahg, No. 202000087, 2021

WL 4058360 (Sept. 7, 2021), the U.S. Navy-Marine

Corps Court of Criminal Appeals concluded that bump

stocks do not satisfy the definition of “machinegun” in

the National Firearms Act and, therefore, that a servicemember’s possession of such a device did not violate

the Uniform Code of Military Justice. See id. at *16.

Although the court found the statutory definition of

“machinegun” ambiguous, see id. at *11-*12, it stated

that the relevant terms are “best read” not to encompass bump stocks, id. at *12. The U.S. Navy-Marine

Corps Court of Criminal Appeals is not the highest

court in the military justice system, however, because

The Federal Circuit also recently rejected takings claims asserted by former bump-stock owners. See McCutchen v. United

States, 14 F.4th 1355, 1357-1358 (2021).

5

23

its decisions are subject to review by the U.S. Court of

Appeals for the Armed Forces. See 10 U.S.C. 867.6

Any suggestion that a “circuit split” (Pet. 4) exists on

the validity of the final rule is therefore incorrect. The

decision below is consistent with the only other circuit

court decision on the books, Guedes v. ATF, supra, as

well as with multiple district court decisions. To be

sure, the Tenth and D.C. Circuits upheld the final rule

under the Chevron framework, see Guedes, 920 F.3d at

17-32; Pet. App. 14a-15a, while several district courts

have upheld the rule as the best interpretation of the

statute, see Pet. App. 67a; Cargill, 502 F. Supp. 3d at

1190, 1194. But the fact that multiple courts have rejected challenges to the final rule both with and without

reliance on Chevron only underscores that the validity

of the rule does not turn on the application of Chevron.

C. Petitioner’s Chevron Questions Do Not Warrant This

Court’s Review, Especially In This Case

As previously noted, petitioner does not actually ask

this Court to resolve the core statutory question

addressed by ATF in the final rule—i.e., whether bump

stocks are “machinegun[s]” under the National Firearms Act, 26 U.S.C. 5845(b). Petitioner instead frames

the case as presenting three methodological questions

about Chevron: whether courts should defer to an

agency’s interpretation of a statute under Chevron if the

agency “affirmatively disavows Chevron deference,”

whether Chevron “applies to statutes with criminal-law

applications,” and whether the rule of lenity takes precAs of the filing of this brief, the deadline for the Judge Advocate

General to decide whether to seek further review of that decision by

the U.S. Court of Appeals for the Armed Forces has not yet passed.

10 U.S.C. 867(a)(2); see CAAF R. 19(a)(1) (60-day deadline).

6

24

edence over Chevron if such a statute is ambiguous.

Pet. i. Those questions do not warrant further review,

and this case would be an unsuitable vehicle in which to

address them.

1. a. Petitioner contends (Pet. 19) that the court of

appeals erred in applying Chevron in the face of the

agency’s express disavowal of any reliance on that doctrine and, further, that the courts of appeals are in “disarray on the question whether Chevron deference can

be waived.” See Pet. 15-22. Petitioner’s chief support

for that claim appears to be the dissenting opinions below, which are not law and which do not establish any

“conflict[] * * * in the circuits about the validity of the

ATF regulation,” Pet. 19. Nor would review be warranted to address any purported disagreement within

the Tenth or D.C. Circuits. See Pet. 19-20; cf. Wisniewski v. United States, 353 U.S. 901, 902 (1957) (per curiam) (“It is primarily the task of a Court of Appeals to

reconcile its internal difficulties.”).

Petitioner’s other examples (Pet. 21 & n.5) only underscore why review is not warranted. In several, the

reviewing court concluded that the correct result did

not depend on whether Chevron applied—as is also true

here. See Babb v. Secretary, Dep’t of Veterans Affairs,

992 F.3d 1193, 1208 n.10 (11th Cir. 2021) (stating that

questions about Chevron and waiver could be left “for

another day”); Amaya v. Rosen, 986 F.3d 424, 431 n.4

(4th Cir. 2021) (stating that the court would “reach the

same conclusion * * * even after affording Chevron

deference,” because the agency’s interpretation was

“unreasonable”); New York v. United States Dep’t of

Justice, 951 F.3d 84, 101 n.17, 124 (2d Cir. 2020) (upholding agency’s action even while declining to consider

Chevron), cert. dismissed, 141 S. Ct. 1291 (2021). One

25

of petitioner’s examples involved the altogether different question whether an agency must invoke Chevron in

a rulemaking in order to rely on it later in litigation. See

Sierra Club v. EPA, 252 F.3d 943, 947 n.8 (8th Cir.

2001). And another, CFTC v. Erskine, 512 F.3d 309 (6th

Cir. 2008), involved an interpretation that had been announced by the agency only in litigation, not in a rulemaking or an adjudication, id. at 314.

More broadly, petitioner’s waiver arguments conflate two distinct questions. The first is whether a reviewing court may decline to consider the application of

Chevron if the court concludes that the government has

waived or forfeited arguments in favor of Chevron deference in litigation. See, e.g., HollyFrontier Cheyenne

Ref., LLC v. Renewable Fuels Ass’n, 141 S. Ct. 2172,

2180 (2021). The second is whether a reviewing court is

required to forgo any consideration of Chevron if the

government does not invoke that doctrine in litigation.

Whatever the correct answer to the first question—the

government contended below that Chevron, which rests

on a presumption of congressional intent, is not generally susceptible to litigation waiver or forfeiture, see

Gov’t C.A. Supp. En Banc Br. 5—petitioner has failed

to explain why the government’s litigation choices

would altogether disable a reviewing court from making

its own independent judgment about how best to apply

this Court’s Chevron precedents. See Pet. App. 16a

(stating that the applicability of Chevron does not turn

on an “agency’s say so”); cf. City of Arlington v. FCC,

569 U.S. 290, 310 (2013) (Breyer, J., concurring in part

and concurring in the judgment) (“The question

whether Congress has delegated to an agency the authority to provide an interpretation that carries the

26

force of law is for the judge to answer independently.”);

id. at 317 (Roberts, C.J., dissenting) (same).

b. Petitioner next contends (Pet. 23) that the court

of appeals erred in applying Chevron to ATF’s final rule

because “the statute at issue has criminal-law applications.” But petitioner again fails to identify any substantial conflict of authority on that issue, or any other

compelling basis for review.

This Court has applied Chevron deference to agency

interpretations of statutes with potential “criminal-law

applications.” Pet. 23. Indeed, that was true in Chevron

itself, in which the Court deferred to an agency’s interpretation of the term “stationary source” for purposes

of a permitting requirement in the Clean Air Act, 42

U.S.C. 7502(a)(1) and (b)(6) (1982). A knowing violation

of that requirement was a federal crime. 42 U.S.C.

7413(c)(1) (1982). Similarly, in United States v. O’Hagan, 521 U.S. 642 (1997), this Court applied Chevron in

an insider-trading prosecution to defer to the Securities

and Exchange Commission’s interpretation of a statute

administered by the Commission. The statutory scheme

prohibits “fraudulent, deceptive, or manipulative acts

and practices” in connection with tender offers, 15

U.S.C. 78n(e); authorizes the Commission to define

those terms by regulation, ibid.; and makes willful violations of the agency’s rules a felony, 15 U.S.C. 78ff(a).

This Court afforded “controlling weight” to the Commission’s regulation. O’Hagan, 521 U.S. at 673 (quoting

Chevron, 467 U.S. at 844). And in Babbitt v. Sweet

Home Chapter of Communities for a Great Oregon, 515

U.S. 687 (1995), the Court applied Chevron to uphold an

agency’s interpretation of ambiguous statutory language, even though a violation carried criminal conse-

27

quences, see id. at 703, 704 n.18; see also 16 U.S.C.

1540(b)(1).

Petitioner contrasts (Pet. 26) those decisions with

the Court’s later observation that “criminal laws are for

courts, not for the Government, to construe,” Abramski

v. United States, 573 U.S. 169, 191 (2014), as well as the

Court’s statement that it has “never held that the Government’s reading of a criminal statute is entitled to any

deference,” United States v. Apel, 571 U.S. 359, 369

(2014). But Abramski and Apel did not involve agency

regulations with any claim to Chevron deference. In

Apel, for example, the defendant sought to rely on certain statements in the United States Attorneys’ Manual,

a collection of “ ‘internal * * * guidance’ ” for federal

prosecutors that is “not intended to be binding.” 571

U.S. at 368-369; cf. Abramski, 573 U.S. at 191 (no deference to interpretation in decades-old, non-binding

guidance documents that the agency no longer followed). Those decisions underscore that a “vast body of

administrative interpretation” exists to which Chevron

simply does not apply. Crandon v. United States, 494

U.S. 152, 177 (1990) (Scalia, J., concurring in the judgment) (emphasis omitted). But they do not call into

question the applicability of Chevron to rules like the

ones at issue in Chevron, O’Hagan, and Sweet Home.

Petitioner errs in suggesting (Pet. 28) that the Court

previously granted review of this issue in EsquivelQuintana v. Lynch, 137 S. Ct. 1562 (2016). The question

presented there was whether a conviction for a particular form of sexual abuse under state law constituted

“sexual abuse of a minor” for purposes of the definition

of an “aggravated felony” in the Immigration and Nationality Act, 8 U.S.C. 1101(a)(43)(A). See EsquivelQuintana, 137 S. Ct. at 1567. That question—unlike pe-

28

titioner’s challenge to ATF’s final rule—had intractably

divided the courts of appeals, which had reached conflicting results in evaluating similar state laws. See Pet.

at 13-17, Esquivel-Quintana, supra (No. 16-54) (collecting cases). And the petition for a writ of certiorari

asked the Court to address the merits of the dispute—

unlike the present petition, which seeks review of hypothetical Chevron questions and does not ask the Court

to resolve whether bump stocks are machineguns.

Petitioner’s reliance (Pet. 29) on the separation of

powers is equally unavailing. Congress may prescribe

criminal penalties for the violation of a regulation, the

precise content of which is left to an agency, without violating the constitutional separation of powers:

There is no absolute rule * * * against Congress’

delegation of authority to define criminal punishments. We have upheld delegations whereby the Executive or an independent agency defines by regulation what conduct will be criminal, so long as Congress makes the violation of regulations a criminal

offense and fixes the punishment, and the regulations “confine themselves within the field covered by

the statute.”

Loving v. United States, 517 U.S. 748, 768 (1996)

(brackets omitted) (quoting United States v. Grimaud,

220 U.S. 506, 518 (1911)); cf. Pet. 30 (acknowledging that

this Court has upheld Congress’s constitutional authority to delegate “to the executive branch some responsibility for defining crimes”).

c. Finally, petitioner asks (Pet. 32) this Court to consider “the proper interplay between Chevron and the

rule of lenity.” But even petitioner acknowledges (ibid.)

that this issue is “subsidiary” to his other arguments

concerning Chevron, and petitioner does not suggest

29

that the lenity question would merit the Court’s review

on its own. And for good reason: petitioner points to no

conflict among the circuits, instead criticizing the

panel’s specific treatment of the issue here. Pet. 32-34.

2. In any event, this case would be an unsuitable vehicle in which to address petitioner’s Chevron questions

for multiple reasons.

First, entertaining petitioner’s Chevron questions in

this case would be anomalous because both parties

agree that Chevron does not apply, albeit for different

reasons. In the proceedings below, petitioner principally argued that the statutory language unambiguously forecloses ATF’s interpretation, while the government argued that the final rule is an interpretive rule to

which Chevron does not apply. See Pet. App. 10a, 12a;

see also pp. 20-21, supra. Now, petitioner would apparently have this Court assume both that the statute is

ambiguous, contrary to his own position below, and that

the final rule is legislative rather than interpretive, contrary to the government’s position—because those

premises are necessary for any Chevron question to

arise under the circumstances of this case. The Court

should decline petitioner’s invitation to address potentially difficult Chevron questions under artificial premises that neither party fully endorses.

Second, resolving petitioner’s Chevron questions in

his favor would make no practical difference to the outcome in this appeal. In affirming the district court’s denial of a preliminary injunction, the court of appeals

concluded that petitioner had not only failed to demonstrate a likelihood of success on the merits, but also had

failed to carry his burden of showing irreparable harm

in the absence of an injunction. See Pet. App. 34a (observing that the court “could affirm * * * solely on”

30

likelihood-of-success grounds, but determining that petitioner also “has not met the other prerequisites for

preliminary relief ”). In particular, the court of appeals

rejected petitioner’s argument that he had satisfied the

irreparable-harm requirement by alleging that the final

rule violates the separation of powers; the court also

held that petitioner had waived reliance on any other

theory. Id. at 24a-36a. Petitioner does not seek review

of that holding here, and it furnishes a separate barrier

to granting any injunctive relief.

Third, this Court does not ordinarily grant review of

interlocutory decisions. See, e.g., Virginia Military

Inst. v. United States, 508 U.S. 946, 946 (1993) (Scalia,

J., respecting denial of certiorari). A departure from

that principle would be particularly unwarranted here.

As noted above, a panel of the Fifth Circuit and the en

banc Sixth Circuit are presently considering similar

challenges to the same final rule. See pp. 22-23, supra.

Those proceedings may bear on whether this or any

other challenge to the final rule warrants further review. For example, if those courts were to determine

that the rule reflects the best interpretation of the statute (as the government urges), then petitioner’s Chevron questions would be all the more academic. See

Edelman v. Lynchburg Coll., 535 U.S. 106, 114 (2002)

(observing that “there is * * * no point in asking what

kind of deference, or how much,” an agency’s interpretation should receive if the agency has adopted “the position [the court] would adopt” without deference); cf.

Guedes, 140 S. Ct. at 791 (statement of Gorsuch, J.)

(explaining that the “interlocutory petition” in Guedes

did not merit review, both because any errors “might

yet be corrected before final judgment” and because

this Court would benefit from “hearing the[] considered

31

judgments” of other courts of appeals). At a minimum,

the interlocutory posture of this case and the ongoing

proceedings in other courts of appeals vitiate any suggestion that the final rule must be reviewed now or not

at all.

CONCLUSION

The petition for a writ of certiorari should be denied.

Respectfully submitted.

ELIZABETH B. PRELOGAR

Solicitor General

BRIAN M. BOYNTON

Acting Assistant Attorney

General

MARK B. STERN

MICHAEL S. RAAB

ABBY C. WRIGHT

BRAD HINSHELWOOD

KYLE T. EDWARDS

Attorneys

NOVEMBER 2021

This is a copy of a public record, reproduced as it was published. It is not legal advice, and it may not be the version a court would rely on. Check the official source before you cite it.

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