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H.R. 1366
U.S. House•Senate Floor Calendar
Summary
H.R. 1366, the Mining Regulatory Clarity Act, was introduced in the House on Feb 14, 2025 by Rep. Mark Amodei (R) with 2 co-sponsors. It last saw action on Mar 17, 2026: Read twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 357.
Record
Text
H.R. 1366 has 2 co-sponsors, 2 roll calls and 1 amendment.
hb1366/engrossed-in-house.txt119 HR 1366 EH: Mining Regulatory Clarity ActU.S. House of Representativestext/xmlENPursuant to Title 17 Section 105 of the United States Code, this file is not subject to copyright protection and is in the public domain.IB119th CONGRESS 1st SessionH. R. 1366IN THE HOUSE OF REPRESENTATIVESAN ACTTo provide for the location of multiple hardrock mining mill sites, to establish the Abandoned Hardrock Mine Fund, and for other purposes.1.Short titleThis Act may be cited as the Mining Regulatory Clarity Act .2.Hardrock mining mill sites(a)Multiple mill sitesSection 2337 of the Revised Statutes of the United States ( 30 U.S.C. 42 ) is amended by adding at the end the following:(c)Additional mill sites(1)DefinitionsIn this subsection:(A)Mill siteThe term mill site means a location of public land that is reasonably necessary for waste rock or tailings disposal or other operations reasonably incident to mineral development on, or production from land included in a plan of operations.(B)Operations; OperatorThe terms operations and operator have the meanings given those terms in section 3809.5 of title 43, Code of Federal Regulations (as in effect on the date of enactment of this subsection).(C)Plan of operationsThe term plan of operations means a plan of operations that an operator must submit and the Secretary of the Interior or the Secretary of Agriculture, as applicable, must approve before an operator may begin operations, in accordance with, as applicable—(i)subpart 3809 of title 43, Code of Federal Regulations (or successor regulations establishing application and approval requirements); and(ii)part 228 of title 36, Code of Federal Regulations (or successor regulations establishing application and approval requirements).(D)Public landThe term public land means land owned by the United States that is open to location under sections 2319 through 2344 of the Revised Statutes of the United States ( 30 U.S.C. 22 et seq. ), including—(i)land that is mineral-in-character (as defined in section 3830.5 of title 43, Code of Federal Regulations (as in effect on the date of enactment of this subsection));(ii)nonmineral land (as defined in section 3830.5 of title 43, Code of Federal Regulations (as in effect on the date of enactment of this subsection)); and(iii)land where the mineral character has not been determined.(2)In generalNotwithstanding subsections (a) and (b), where public land is needed by the proprietor of a lode or placer claim for operations in connection with any lode or placer claim within the proposed plan of operations, the proprietor may—(A)locate and include within the plan of operations as many mill site claims under this subsection as are reasonably necessary for its operations; and(B)use or occupy public land in accordance with an approved plan of operations.(3)Mill sites convey no mineral rightsA mill site under this subsection does not convey mineral rights to the locator.(4)Size of mill sitesA location of a single mill site under this subsection shall not exceed 5 acres.(5)Mill site and lode or placer claims on same tracts of public landA mill site may be located under this subsection on a tract of public land on which the claimant or operator maintains a previously located lode or placer claim.(6)Effect on mining claimsThe location of a mill site under this subsection shall not affect the validity of any lode or placer claim, or any rights associated with such a claim.(7)PatentingA mill site under this section shall not be eligible for patenting.(8)Savings provisionsNothing in this subsection—(A)diminishes any right (including a right of entry, use, or occupancy) of a claimant;(B)creates or increases any right (including a right of exploration, entry, use, or occupancy) of a claimant on land that is not open to location under the general mining laws;(C)modifies any provision of law or any prior administrative action withdrawing land from location or entry;(D)limits the right of the Federal Government to regulate mining and mining-related activities (including requiring claim validity examinations to establish the discovery of a valuable mineral deposit) in areas withdrawn from mining, including under—(i)the general mining laws;(ii)the Federal Land Policy and Management Act of 1976 ( 43 U.S.C. 1701 et seq. );(iii)the Wilderness Act ( 16 U.S.C. 1131 et seq. );(iv)sections 100731 through 100737 of title 54, United States Code;(v)the Endangered Species Act of 1973 ( 16 U.S.C. 1531 et seq. );(vi)division A of subtitle III of title 54, United States Code (commonly referred to as the ‘National Historic Preservation Act’); or(vii)section 4 of the Act of July 23, 1955 (commonly known as the Surface Resources Act of 1955 ) (69 Stat. 368, chapter 375; 30 U.S.C. 612 );(E)restores any right (including a right of entry, use, or occupancy, or right to conduct operations) of a claimant that—(i)existed prior to the date on which the land was closed to, or withdrawn from, location under the general mining laws; and(ii)that has been extinguished by such closure or withdrawal; or(F)modifies section 404 of division E of the Consolidated Appropriations Act, 2024 ( Public Law 118–42 )..(b)Abandoned Hardrock Mine Fund(1)EstablishmentThere is established in the Treasury of the United States a separate account, to be known as the Abandoned Hardrock Mine Fund (referred to in this subsection as the Fund ).(2)Source of depositsAny amounts collected by the Secretary of the Interior pursuant to the claim maintenance fee under section 10101(a)(1) of the Omnibus Budget Reconciliation Act of 1993 ( 30 U.S.C. 28f(a)(1) ) on mill sites located under subsection (c) of section 2337 of the Revised Statutes of the United States ( 30 U.S.C. 42 ) shall be deposited into the Fund.(3)UseThe Secretary of the Interior may make expenditures from amounts available in the Fund, without further appropriations, only to carry out section 40704 of the Infrastructure Investment and Jobs Act ( 30 U.S.C. 1245 ).(4)Allocation of fundsAmounts made available under paragraph (3)—(A)shall be allocated in accordance with section 40704(e)(1) of the Infrastructure Investment and Jobs Act ( 30 U.S.C. 1245(e)(1) ); and(B)may be transferred in accordance with section 40704(e)(2) of that Act ( 30 U.S.C. 1245(e)(2) ).(c)Clerical amendmentsSection 10101 of the Omnibus Budget Reconciliation Act of 1993 ( 30 U.S.C. 28f ) is amended—(1)by striking the Mining Law of 1872 ( 30 U.S.C. 28–28e ) each place it appears and inserting sections 2319 through 2344 of the Revised Statutes of the United States ( 30 U.S.C. 22 et seq. ) ;(2)in subsection (a)—(A)in paragraph (1)—(i)in the second sentence, by striking Such claim maintenance fee and inserting the following:(B)FeeThe claim maintenance fee under subparagraph (A); and(ii)in the first sentence, by striking The holder of and inserting the following:(A)In generalThe holder of; and(B)in paragraph (2)—(i)in the second sentence, by striking Such claim maintenance fee and inserting the following:(B)FeeThe claim maintenance fee under subparagraph (A); and(ii)in the first sentence, by striking The holder of and inserting the following:(A)In generalThe holder of; and(3)in subsection (b)—(A)in the second sentence, by striking The location fee and inserting the following:(2)FeeThe location fee; and(B)in the first sentence, by striking The claim main tenance fee and inserting the following:(1)In generalThe claim maintenance fee.Passed the House of Representatives December 18, 2025. Kevin F. McCumber, Clerk.
Tracker
The tracker indicates the progress of this legislation as it moves through the legislative process.
- Introduced2025-02-14
- Passed House2025-12-18
- Passed Senate
- Conference
- To President
- Became Law
CRS Summary
The summaries are the Congressional Research Service’s, one per stage. Read them in full.
Reported to House Nov 25, 2025
hb1366/reported-to-house.mdShown Here:
Reported to House (11/25/2025)
Mining Regulatory Clarity Act
This bill allows mining operators to use federal lands for activities ancillary to mining, such as waste disposal, regardless of whether those lands contain mineral deposits valuable enough to be mined (mineral validity). It also establishes the Abandoned Hardrock Mine Fund.
The bill addresses a 2022 decision in the U.S. Court of Appeals for the Ninth Circuit related to the Rosemont Copper Mine in Arizona (commonly known as the Rosemont decision, described further in CRS Report R48166). The court held that mining claims are only allowed where mineral validity has been established and that mill site claims are more appropriate means for establishing a mining waste disposal site under the Mining Act.
The bill allows a mining operator to (1) locate and include within its plan of operations as many mill site claims (e.g., areas for waste rock disposal) as are reasonably necessary for its operations, and (2) use or occupy public land in accordance with an approved plan of operations.
Additionally, the bill requires any revenue generated from fees for such mill site claims to be deposited into the Abandoned Hardrock Mine Fund. The Department of the Interior must use the fund for certain abandoned hardrock mine reclamation activities.
Sponsors
Rep. Mark Amodei (R) sponsors H.R. 1366, and 2 members have co-sponsored it, 1 of them from the day it was introduced.
Committees
H.R. 1366 went before 2 committees: Natural Resources and Energy and Mineral Resources Subcommittee.

Reports
1 committee report has been filed on H.R. 1366, the latest H. Rept. 119-386.
- H. Rept. 119-386 — MINING REGULATORY CLARITY ACT
Actions
H.R. 1366 has taken 24 actions since Feb 14, 2025, the latest on Mar 17, 2026.
| Chamber | Action | |||
|---|---|---|---|---|
Mar 17, 2026 | Senate | Read twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 357. | ||
Dec 18, 202511:03 | House | Considered under the provisions of rule H. Res. 951. (consideration: CR H6044-6049) | ||
Dec 18, 202511:03 | House | Rule provides for consideration of H.R. 4776, H.R. 1366, H.R. 845, H.R. 3616, H.R. 3632 and H.R. 4371. The resolution provides for consideration of H.R. 4776, under a structured rule and H.R. 1366, H.R. 845, H.R. 3616, H.R. 3632, and H.R. 4371 under a closed rule. The resolution provides one motion to recommit on each bill. | ||
Dec 18, 202511:04 | House | DEBATE - The House proceeded with one hour of debate on H.R. 1366. | ||
Dec 18, 202511:36 | House | The previous question was ordered pursuant to the rule. |
Votes
H.R. 1366 went to 2 roll calls in the House, the latest on Dec 18, 2025 at 219–198.
| Chamber | Question | Yea | Nay | |||
|---|---|---|---|---|---|---|
Dec 18, 2025 | House | On Passage | 219 | 198 | ||
Dec 18, 2025 | House | On Motion to Recommit | 205 | 213 |
Amendments
1 amendment has been offered to H.R. 1366, the latest acted on Dec 18, 2025.
Related bills
3 bills are related to H.R. 1366.
HR 4754Department of the Interior, Environment, and Related Agencies Appropriations Act, 2026Jul 24, 2025 · Placed on the Union Calendar, Calendar No. 175. · Related bill
HRES 951Providing for consideration of the bill (H.R. 4776) to amend the National Environmental Policy Act of 1969 to clarify ambiguous provisions and facilitate a more efficient, effective, and timely environmental review process; providing for consideration of the bill (H.R. 1366) to provide for the location of multiple hardrock mining mill sites, to establish the Abandoned Hardrock Mine Fund, and for other purposes; providing for consideration of the bill (H.R. 845) to require the Secretary of the Interior to reissue regulations removing the gray wolf from the list of endangered and threatened wildlife under the Endangered Species Act of 1973; providing for consideration of the bill (H.R. 3616) to require the Federal Energy Regulatory Commission to review regulations that may affect the reliable operation of the bulk-power system; providing for consideration of the bill (H.R. 3632) to amend the Federal Power Act to adjust the requirements for orders, rules, and regulations relating to furnishing adequate service, to require owners or operators of generating facilities to provide notice of planned retirements of certain electric generating units, and for other purposes; and providing for consideration of the bill (H.R. 4371) to amend the William Wilberforce Trafficking Victims Protection Reauthorization Act of 2008 to enhance efforts to combat the trafficking of children.Dec 16, 2025 · Motion to reconsider laid on the table Agreed to without objection. · Related bill
S 544Mining Regulatory Clarity ActFeb 11, 2026 · Placed on Senate Legislative Calendar under General Orders. Calendar No. 334. · Related billTitles
H.R. 1366 goes by 7 titles, 4 of them short titles.
- Mining Regulatory Clarity Act — Short Title(s) from PCS (Placed on Senate Calendar) bill text
- Mining Regulatory Clarity Act — Short Title(s) as Passed House
- To provide for the location of multiple hardrock mining mill sites, to establish the Abandoned Hardrock Mine Fund, and for other purposes. — Official Titles from EH (Engrossed in House) bill text
- Mining Regulatory Clarity Act — Display Title
- Mining Regulatory Clarity Act — Short Title(s) as Reported to House
- Mining Regulatory Clarity Act of 2025 — Short Title(s) as Introduced
- To provide for the location of multiple hardrock mining mill sites, to establish the Abandoned Hardrock Mine Fund, and for other purposes. — Official Title as Introduced
Lobbying
20 clients hired 16 firms and 105 registered lobbyists who named H.R. 1366 in 92 quarterly filings, 2025 to 2026. Reported under the Lobbying Disclosure Act; a filing’s income covers everything its registrant worked that quarter, so the amounts below are the filings’, not this bill’s.
Filed under Natural Resources, Energy/Nuclear, Defense, Budget/Appropriations, Clean Air and Water (quality), Transportation, Real Estate/Land Use/Conservation, Agriculture.
Clients
Who paid to be heard, by how many filings named the bill.
| Client | Business | State | Firms | Filings | Reported |
|---|---|---|---|---|---|
| NATIONAL MINING ASSOCIATION | Trade Association | District of Columbia | 2 | 10 | $150K |
| SECURING AMERICA'S FUTURE ENERGY ALLIANCE | — | District of Columbia | 1 | 8 | — |
| BARRICK GOLD OF NORTH AMERICA INC. | Gold, silver and copper mining | Utah | 1 | 6 | $550K |
| KINROSS GOLD U.S.A., INC. | Precious metals mining company. | Nevada | 1 | 6 | $360K |
| NEWMONT MINING CORPORATION | Mining | District of Columbia | 1 | 6 | $300K |
| RACY & ASSOCIATES (ON BEHALF OF PIMA COUNTY) | Local/county government | Arizona | 1 | 6 | $40K |
| BARRICK GOLD OF NORTH AMERICA | — | District of Columbia | 1 | 6 | — |
| EARTHJUSTICE ACTION | nonprofit advocacy organization | District of Columbia | 1 | 5 | — |
| STATE OF NEVADA | State government | Nevada | 1 | 4 | $240K |
| PERPETUA RESOURCES | Mining company | Iowa | 1 | 4 | $230K |
| JINDALEE LITHIUM LIMITED | Developer of McDermitt Li and Mg critical minerals project in Malheur County, Oregon. | — | 1 | 4 | $190K |
| IONEER USA CORPORATION | Lithium Boron mining company | Nevada | 1 | 4 | $120K |
| LEAGUE OF CONSERVATION VOTERS | — | District of Columbia | 1 | 4 | — |
| TROUT UNLIMITED | — | Virginia | 1 | 4 | — |
| AMERICANS FOR PROSPERITY | — | Virginia | 1 | 3 | — |
| DEFENDERS OF WILDLIFE | — | District of Columbia | 1 | 3 | — |
| EARTHWORKS | Earthworks is a non-profit organization that protects communities and the environment. | District of Columbia | 1 | 3 | — |
| NATIONAL PARKS CONSERVATION ASSOCIATION | — | District of Columbia | 1 | 3 | — |
| ZERO EMISSION TRANSPORTATION ASSOCIATION | — | District of Columbia | 1 | 2 | — |
| PERPETUA RESOURCES, CORP. | Natural Resources and Mining | Idaho | 1 | 1 | $30K |
Firms
Registrants who filed on the bill, by filings.
Lobbyists
Named on the filings that cite the bill. The 20 named most often, of 105.
| Lobbyist | Firms | Clients | Filings |
|---|---|---|---|
| KAI ANDERSON | 1 | 5 | 24 |
| PETER STAHLEY | 1 | 5 | 23 |
| ANDREW FORBES | 1 | 4 | 18 |
| SAMANTHA SWING | 1 | 3 | 14 |
| RYAN MULVENON | 1 | 2 | 10 |
| CONRAD LA JOIE | 1 | 1 | 8 |
| DEVON LAMMERT | 1 | 1 | 8 |
| HOWARD ESTES | 1 | 1 | 8 |
| GERALD MULLINS | 1 | 1 | 7 |
| JUSTIN PROSSER | 1 | 1 | 7 |
| MARTHA NEWELL | 1 | 1 | 7 |
| RICHARD RUSSELL | 1 | 1 | 7 |
| AVERY ASH | 1 | 1 | 6 |
| BETH VIOLA | 1 | 1 | 6 |
| CHRISTINA ERLING | 1 | 1 | 6 |
| JOHN DEARBORN | 1 | 1 | 6 |
| STEVEN BLOCH | 1 | 1 | 6 |
| ADDIE HAUGHEY | 1 | 1 | 5 |
| BLAINE MILLER MCFEELEY | 1 | 1 | 5 |
| JASMINE JENNINGS ELLER | 1 | 1 | 5 |
Filings
The documents themselves, on the Senate’s Lobbying Disclosure site, largest reported first.
| Client | Registrant | Period | Reported | Document |
|---|---|---|---|---|
| NATIONAL MINING ASSOCIATION | NATIONAL MINING ASSOCIATION | 2026 second_quarter | $820K | 2nd Quarter - Report |
| NATIONAL MINING ASSOCIATION | NATIONAL MINING ASSOCIATION | 2025 second_quarter | $760K | 2nd Quarter - Amendme… |
| NATIONAL MINING ASSOCIATION | NATIONAL MINING ASSOCIATION | 2026 first_quarter | $720K | 1st Quarter - Report |
| NATIONAL MINING ASSOCIATION | NATIONAL MINING ASSOCIATION | 2025 first_quarter | $660K | 1st Quarter - Report |
| NATIONAL MINING ASSOCIATION | NATIONAL MINING ASSOCIATION | 2025 third_quarter | $649K | 3rd Quarter - Report |
| NATIONAL MINING ASSOCIATION | NATIONAL MINING ASSOCIATION | 2025 fourth_quarter | $640K | 4th Quarter - Report |
| AMERICANS FOR PROSPERITY | AMERICANS FOR PROSPERITY | 2025 third_quarter | $495K | 3rd Quarter - Report |
| BARRICK GOLD OF NORTH AMERICA | BARRICK GOLD OF NORTH AMERICA | 2025 first_quarter | $420K | 1st Quarter - Report |
| AMERICANS FOR PROSPERITY | AMERICANS FOR PROSPERITY | 2025 fourth_quarter | $390K | 4th Quarter - Amendme… |
| AMERICANS FOR PROSPERITY | AMERICANS FOR PROSPERITY | 2025 fourth_quarter | $390K | 4th Quarter - Report |
| BARRICK GOLD OF NORTH AMERICA | BARRICK GOLD OF NORTH AMERICA | 2026 second_quarter | $300K | 2nd Quarter - Report |
| BARRICK GOLD OF NORTH AMERICA | BARRICK GOLD OF NORTH AMERICA | 2026 first_quarter | $300K | 1st Quarter - Report |
| BARRICK GOLD OF NORTH AMERICA | BARRICK GOLD OF NORTH AMERICA | 2025 fourth_quarter | $300K | 4th Quarter - Report |
| BARRICK GOLD OF NORTH AMERICA | BARRICK GOLD OF NORTH AMERICA | 2025 second_quarter | $300K | 2nd Quarter - Report |
| LEAGUE OF CONSERVATION VOTERS | LEAGUE OF CONSERVATION VOTERS | 2025 second_quarter | $290K | 2nd Quarter - Report |
| LEAGUE OF CONSERVATION VOTERS | LEAGUE OF CONSERVATION VOTERS | 2025 fourth_quarter | $280K | 4th Quarter - Report |
| BARRICK GOLD OF NORTH AMERICA | BARRICK GOLD OF NORTH AMERICA | 2025 third_quarter | $270K | 3rd Quarter - Report |
| LEAGUE OF CONSERVATION VOTERS | LEAGUE OF CONSERVATION VOTERS | 2026 second_quarter | $230K | 2nd Quarter - Report |
| NATIONAL PARKS CONSERVATION ASSOCIATION | NATIONAL PARKS CONSERVATION ASSOCIATION | 2025 third_quarter | $216.7K | 3rd Quarter - Report |
| EARTHJUSTICE ACTION | EARTHJUSTICE ACTION | 2026 second_quarter | $188.3K | 2nd Quarter - Amendme… |
Classification
The Congressional Research Service files H.R. 1366 under Environmental Protection, one of its 31 policy areas, and gives it 3 legislative subjects.
CRS Subjects
CRS assigns every bill one policy area from its 31; H.R. 1366’s is Environmental Protection.
hr1366/policy-areas.txtLegislative Subjects
H.R. 1366 carries 3 of CRS’s legislative subjects, from Government trust funds to Mining.
hr1366/subjects.txtConstitutional authority
The clause the sponsor cites as Congress’s power to enact H.R. 1366, as entered in the Congressional Record.
[Congressional Record Volume 171, Number 31 (Friday, February 14, 2025)][House]From the Congressional Record Online through the Government Publishing Office [www.gpo.gov]By Mr. AMODEI of Nevada:H.R. 1366.Congress has the power to enact this legislation pursuantto the following:The constitutional authority on which this bill rests isthe power of Congress to make all rules and regulationsrespecting property belonging to the United States underArticle IV, Section 3, Clause 2.[Page H715]
Source: congress.gov · legiscan.com
