‘‘(c)(1) A person who is transporting a firearm or am-
munition may not be arrested or otherwise detained for vio-
lation of any law or any rule or regulation of a State or 
any political subdivision thereof related to the possession, 
transportation, or carrying of firearms, unless there is 
probable cause to believe that the person is doing so in a 
manner not provided for in subsection (a). 
‘‘(2) When a person asserts this section as a defense 
in a criminal proceeding, the prosecution shall bear the bur-
den of proving, beyond a reasonable doubt, that the conduct 
of the person did not satisfy the conditions set forth in sub-
section (a). 
‘‘(3) When a person successfully asserts this section as 
a defense in a criminal proceeding, the court shall award 
the prevailing defendant a reasonable attorney’s fee. 
‘‘(d)(1) A person who is deprived of any right, privi-
lege, or immunity secured by this section, section 926B or 
926C, under color of any statute, ordinance, regulation, cus-
tom, or usage of any State or any political subdivision 
thereof, may bring an action in any appropriate court 
against any other person, including a State or political sub-
division thereof, who causes the person to be subject to the 
deprivation, for damages and other appropriate relief. 
‘‘(2) The court shall award a plaintiff prevailing in 
an action brought under paragraph (1) damages and such 
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other relief as the court deems appropriate, including a rea-
sonable attorney’s fee.’’. 
(b) CLERICAL AMENDMENT.—The table of sections for 
such chapter is amended in the item relating to section 
926A by striking ‘‘firearms’’ and inserting ‘‘firearms or 
ammunition’’. 
TITLE XII—POLAR BEAR CON-
SERVATION 
AND 
FAIRNESS 
ACT 
SEC. 1201. SHORT TITLE. 
This title may be cited as the ‘‘Polar Bear Conserva-
tion and Fairness Act’’. 
SEC. 1202. PERMITS FOR IMPORTATION OF POLAR BEAR 
TROPHIES TAKEN IN SPORT HUNTS IN CAN-
ADA. 
Section 104(c)(5)(D) of the Marine Mammal Protec-
tion Act of 1972 (16 U.S.C. 1374(c)(5)(D)) is amended to 
read as follows: 
‘‘(D)(i) The Secretary of the Interior shall, expe-
ditiously after the expiration of the applicable 30-day 
period under subsection (d)(2), issue a permit for the 
importation of any polar bear part (other than an in-
ternal organ) from a polar bear taken in a sport hunt 
in Canada to any person— 
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‘‘(I) who submits, with the permit applica-
tion, proof that the polar bear was legally har-
vested by the person before February 18, 1997; or 
‘‘(II) who has submitted, in support of a 
permit application submitted before May 15, 
2008, proof that the polar bear was legally har-
vested by the person before May 15, 2008, from 
a polar bear population from which a sport- 
hunted trophy could be imported before that date 
in accordance with section 18.30(i) of title 50, 
Code of Federal Regulations. 
‘‘(ii) The Secretary shall issue permits under 
clause (i)(I) without regard to subparagraphs (A) and 
(C)(ii) of this paragraph, subsection (d)(3), and sec-
tions 101 and 102. Sections 101(a)(3)(B) and 
102(b)(3) shall not apply to the importation of any 
polar bear part authorized by a permit issued under 
clause (i)(I). This clause shall not apply to polar bear 
parts that were imported before June 12, 1997. 
‘‘(iii) The Secretary shall issue permits under 
clause (i)(II) without regard to subparagraph (C)(ii) 
of this paragraph or subsection (d)(3). Sections 
101(a)(3)(B) and 102(b)(3) shall not apply to the im-
portation of any polar bear part authorized by a per-
mit issued under clause (i)(II). This clause shall not 
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apply to polar bear parts that were imported before 
the date of enactment of the Polar Bear Conservation 
and Fairness Act.’’. 
TITLE XIII—NORTH AMERICAN 
WETLANDS 
CONSERVATION 
EXTENSION 
SEC. 1301. SHORT TITLE. 
This title may be cited as the ‘‘North American Wet-
lands Conservation Extension Act’’. 
SEC. 1302. AUTHORIZATION OF APPROPRIATIONS. 
Section 7(c) of the North American Wetlands Con-
servation Act (16 U.S.C. 4406(c)) is amended by striking 
‘‘not to exceed—’’ and all that follows through paragraph 
(5) and inserting ‘‘not to exceed $50,000,000 for each of 
fiscal years 2018 through 2022.’’. 
SEC. 1303. LIMITATION ON EXPENDITURES FOR PURCHASE 
OF LAND. 
(a) LIMITATION.—Section 6 of the North American 
Wetlands Conservation Act (16 U.S.C. 4405) is amended 
by adding at the end the following: 
‘‘(c) LIMITATION ON EXPENDITURES FOR PURCHASE 
OF LAND.—Amounts appropriated under this Act may not 
be used by the Secretary to purchase land that will be ad-
ministered by the United States.’’. 
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(b) APPLICATION.—The amendment made by sub-
section (a) shall not apply with respect to any specific land 
acquisition required by contract or other agreement entered 
into before the date of enactment of this Act. 
SEC. 1304. ENHANCED REPORT ON EXPENDITURES. 
Section 10(2) of the North American Wetlands Con-
servation Act (16 U.S.C. 4409(2)) is amended to read as 
follows: 
‘‘(2) an annual assessment of the status of wet-
lands conservation projects, including an accounting 
of— 
‘‘(A) expenditures by Federal, State, and 
other United States entities; 
‘‘(B) expenditures made for fee-simple ac-
quisition of Federal lands in the United States; 
and 
‘‘(C) expenditures by Canadian and Mexi-
can sources to carry out wetland projects funded 
under this Act.’’. 
TITLE XIV—GRAY WOLVES 
SEC. 1401. REISSUANCE OF FINAL RULES RELATING TO 
GRAY WOLVES IN THE WESTERN GREAT 
LAKES AND THE STATE OF WYOMING. 
(a) IN GENERAL.—Notwithstanding any other provi-
sion of law, not later than 60 days after the date of enact-
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ment of this Act, the Secretary of the Interior shall re-
issue— 
(1) the final rule entitled ‘‘Endangered and 
Threatened Wildlife and Plants; Revising the Listing 
of the Gray Wolf (Canis lupus) in the Western Great 
Lakes’’ (76 Fed. Reg. 81666 (December 28, 2011)); 
and 
(2) the final rule entitled ‘‘Endangered and 
Threatened Wildlife and Plants; Removal of the Gray 
Wolf in Wyoming From the Federal List of Endan-
gered and Threatened Wildlife and Removal of the 
Wyoming Wolf Population’s Status as an Experi-
mental Population’’ (77 Fed. Reg. 55530 (September 
10, 2012)). 
(b) NO JUDICIAL REVIEW.—The reissuance of the final 
rules described in subsection (a) shall not be subject to judi-
cial review. 
TITLE XV—HEARING 
PROTECTION 
SEC. 1501. SHORT TITLE. 
This title may be cited as the ‘‘Hearing Protection 
Act’’. 
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SEC. 1502. EQUAL TREATMENT OF SILENCERS AND FIRE-
ARMS. 
(a) IN GENERAL.—Section 5845(a) of the Internal 
Revenue Code of 1986 is amended by striking ‘‘(7) any si-
lencer’’ and all that follows through ‘‘; and (8)’’ and insert-
ing ‘‘and (7)’’. 
(b) EFFECTIVE DATE.—The amendment made by this 
section shall apply to calendar quarters beginning more 
than 90 days after the date of the enactment of this Act. 
SEC. 1503. TREATMENT OF CERTAIN SILENCERS. 
Section 5841 of the Internal Revenue Code of 1986 is 
amended by adding at the end the following: 
‘‘(f) FIREARM SILENCERS.—A person acquiring or 
possessing a firearm silencer in accordance with chapter 44 
of title 18, United States Code, shall be treated as meeting 
any registration and licensing requirements of the National 
Firearms Act with respect to such silencer.’’. 
SEC. 1504. PREEMPTION OF CERTAIN STATE LAWS IN RELA-
TION TO FIREARM SILENCERS. 
Section 927 of title 18, United States Code, is amended 
by adding at the end the following: ‘‘Notwithstanding the 
preceding sentence, a law of a State or a political subdivi-
sion of a State that imposes a tax, other than a generally 
applicable sales or use tax, on making, transferring, using, 
possessing, or transporting a firearm silencer in or affecting 
interstate or foreign commerce, or imposes a marking, rec-
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ordkeeping or registration requirement with respect to such 
a firearm silencer, shall have no force or effect.’’. 
SEC. 1505. DESTRUCTION OF RECORDS. 
Not later than 365 days after the date of the enactment 
of this Act, the Attorney General shall destroy any registra-
tion of a silencer maintained in the National Firearms 
Registration and Transfer Record pursuant to section 5841 
of the Internal Revenue Code of 1986, any application to 
transfer filed under section 5812 of the Internal Revenue 
Code of 1986 that identifies the transferee of a silencer, and 
any application to make filed under section 5822 of the In-
ternal Revenue Code of 1986 that identifies the maker of 
a silencer. 
SEC. 1506. AMENDMENTS TO TITLE 18, UNITED STATES 
CODE. 
Title 18, United States Code, is amended— 
(1) in section 921(a), by striking paragraph (24) 
and inserting the following: 
‘‘(24)(A) The terms ‘firearm silencer’ and ‘firearm 
muffler’ mean any device for silencing, muffling, or dimin-
ishing the report of a portable firearm, including the ‘key-
stone part’ of such a device. 
‘‘(B) The term ‘keystone part’ means, with respect to 
a firearm silencer or firearm muffler, an externally visible 
part of a firearm silencer or firearm muffler, without which 
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a device capable of silencing, muffling, or diminishing the 
report of a portable firearm cannot be assembled, but the 
term does not include any interchangeable parts designed 
to mount a firearm silencer or firearm muffler to a portable 
firearm.’’; 
(2) in section 922(b)— 
(A) in paragraph (1), by striking ‘‘shotgun 
or rifle’’ the first place it appears and inserting 
‘‘shotgun, rifle, firearm silencer or firearm muf-
fler’’; and 
(B) in paragraph (3), by striking ‘‘rifle or 
shotgun’’ and inserting ‘‘shotgun, rifle, firearm 
silencer or firearm muffler’’; and 
(3) in section 923(i)— 
(A) by striking ‘‘Licensed’’ and inserting 
the following: 
‘‘(1) In the case of a firearm other than a firearm si-
lencer or firearm muffler, licensed’’; and 
(B) by adding at the end the following: 
‘‘(2) In the case of a firearm silencer or firearm muf-
fler, licensed importers and licensed manufacturers shall 
identify by means of a serial number engraved or cast on 
the keystone part of the firearm silencer or firearm muffler, 
in such manner as the Attorney General shall by regula-
tions prescribe, each firearm silencer or firearm muffler im-
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ported or manufactured by such importer or manufacturer, 
except that, if a firearm silencer or firearm muffler does 
not have a clearly identifiable keystone part or has multiple 
keystone parts, licensed importers or licensed manufacturers 
shall submit a request for a marking variance to the Attor-
ney General. The Attorney General shall grant such a re-
quest except on showing good cause that marking the fire-
arm silencer or firearm muffler as requested would not fur-
ther the purposes of this chapter.’’. 
SEC. 1507. IMPOSITION OF TAX ON FIREARM SILENCERS OR 
FIREARM MUFFLERS. 
(a) IN GENERAL.—Section 4181 of the Internal Rev-
enue Code of 1986 is amended by adding at the end of the 
list relating to ‘‘Articles taxable at 10 percent’’ the fol-
lowing: 
‘‘Firearm silencers or firearm mufflers.’’. 
(b) FIREARM SILENCERS; FIREARM MUFFLERS.—Sec-
tion 4181 of such Code is amended by adding at the end 
the following: 
‘‘For purposes of this part, the terms ‘firearm silencer’ and 
‘firearm muffler’ mean any device for silencing, muffling, 
or diminishing the report of a portable firearm.’’. 
(c) CONFORMING AMENDMENTS.— 
(1) Section 4181 of such Code is amended by 
striking ‘‘other than pistols and revolvers’’ and insert-
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ing ‘‘other than articles taxable at 10 percent under 
this section’’. 
(2) Section 4182(b) of such Code is amended by 
striking ‘‘firearms, pistols, revolvers, shells, and car-
tridges’’ and inserting ‘‘articles described in section 
4181 and’’. 
(3) Section 4182(c)(1) of such Code is amended 
by striking ‘‘or firearm’’ and inserting ‘‘firearm, fire-
arm silencer, or firearm muffler,’’. 
(d) EFFECTIVE DATE.—The amendments made by this 
section shall apply to articles sold by the manufacturer, 
producer, or importer in any calendar quarter beginning 
more than 90 days after the date of the enactment of this 
Act. 
TITLE XVI—LAWFUL PURPOSE 
AND SELF-DEFENSE 
SEC. 1601. SHORT TITLE. 
This Act may be cited as the ‘‘Lawful Purpose and 
Self Defense Act’’. 
SEC. 1602. ELIMINATION OF AUTHORITY TO RECLASSIFY 
POPULAR RIFLE AMMUNITION AS ‘‘ARMOR 
PIERCING AMMUNITION’’. 
Section 921(a)(17) of title 18, United States Code, is 
amended— 
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(1) in subparagraph (B)(i), by striking ‘‘may be 
used’’ and inserting ‘‘is designed and intended by the 
manufacturer or importer for use’’; 
(2) in subparagraph (B)(ii), by inserting ‘‘by the 
manufacturer or importer’’ before ‘‘for use’’; and 
(3) in subparagraph (C), by striking ‘‘the Attor-
ney General finds is primarily intended to be used for 
sporting purposes’’ and inserting ‘‘is primarily in-
tended by the manufacturer or importer to be used in 
a rifle or shotgun, a handgun projectile that is de-
signed and intended by the manufacturer or importer 
to be used for hunting, recreational, or competitive 
shooting’’. 
SEC. 1603. ELIMINATION OF RESTRICTIONS ON IMPORTA-
TION OF NON-NATIONAL FIREARMS ACT FIRE-
ARM OR AMMUNITION THAT MAY OTHERWISE 
BE LAWFULLY POSSESSED AND SOLD IN THE 
UNITED STATES. 
(a) ELIMINATION OF PROHIBITIONS.—Section 922 of 
title 18, United States Code, is amended— 
(1) in subsection (a), by striking paragraph (7) 
and inserting the following: 
‘‘(7) for any person to manufacture or import 
armor piercing ammunition, unless the manufacture 
or importation of the ammunition— 
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