H.R. 1366 · 119th Congress

Mining Regulatory Clarity Act

Introduced on Feb 14, 2025 by Mark E. Amodei (R-NV-2). 2 cosponsors, 1 of them from another party. Latest action (Mar 17, 2026): Read twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 357.

Stage
Passed one chamber
Introduced
Feb 14, 2025
Cosponsors
2
1 from the other party
Policy area
Environmental Protection
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Progress

The furthest stage the measure reached. Simple and concurrent resolutions do not go to the President.

  1. Introduced
  2. Reported by committee
  3. Passed one chamber
  4. 4Passed both chambers
  5. 5Sent to the President
  6. 6Became law

Official title

To provide for the location of multiple hardrock mining mill sites, to establish the Abandoned Hardrock Mine Fund, and for other purposes.

Subjects

  • Government trust funds
  • Land use and conservation
  • Mining

Summary

By the Congressional Research Service (Reported to House, Nov 25, 2025). Public domain.

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.

Sponsor and cosponsors

Cosponsors by party as of the day they signed on. Original cosponsors signed on the day of introduction.

Mark E. AmodeiR-NV-2Sponsor

Democrats · 1

Republicans · 1

Roll calls

Recorded votes on the measure. Most measures move by voice vote or unanimous consent, which record no individual positions.

  1. On Motion to Recommit
    Dec 18, 2025· House· Procedural· Failed 205–213
  2. On Passage
    Dec 18, 2025· House· Passage· Passed 219–198

History

Every action as published, oldest first. Roll calls link to how each member voted.

  1. Feb 14, 2025Introduced in House
  2. Feb 14, 2025Introduced in House
  3. Feb 14, 2025 · HouseReferred to the House Committee on Natural Resources.
  4. Aug 29, 2025 · HouseReferred to the Subcommittee on Energy and Mineral Resources.
  5. Sep 3, 2025 · HouseSubcommittee Hearings Held
  6. Sep 17, 2025 · HouseSubcommittee on Energy and Mineral Resources Discharged
  7. Sep 17, 2025 · HouseCommittee Consideration and Mark-up Session Held
  8. Sep 17, 2025 · HouseOrdered to be Reported (Amended) by the Yeas and Nays: 25 - 17.
  9. Nov 25, 2025Reported (Amended) by the Committee on Natural Resources. H. Rept. 119-386.
  10. Nov 25, 2025 · HouseReported (Amended) by the Committee on Natural Resources. H. Rept. 119-386.
  11. Nov 25, 2025 · HousePlaced on the Union Calendar, Calendar No. 336.
  12. Dec 16, 2025 · HouseRules Committee Resolution H. Res. 951 Reported to 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.
  13. Dec 18, 2025 · HouseConsidered under the provisions of rule H. Res. 951. (consideration: CR H6044-6049)
  14. Dec 18, 2025 · HouseRule 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.
  15. Dec 18, 2025 · HouseDEBATE - The House proceeded with one hour of debate on H.R. 1366.
  16. Dec 18, 2025 · HouseThe previous question was ordered pursuant to the rule.
  17. Dec 18, 2025 · HouseMs. Leger Fernandez moved to recommit to the Committee on Natural Resources. (text: CR H6049)
  18. Dec 18, 2025 · HouseThe previous question on the motion to recommit was ordered pursuant to clause 2(b) of rule XIX.
  19. Dec 18, 2025 · HousePOSTPONED PROCEEDINGS - At the conclusion of debate on H.R. 1366, the Chair put the question on motion to recommit and by voice vote announced the noes had prevailed. Ms. Leger Fernandez demanded the yeas and nays and the Chair postponed further proceedings until a time to be announced.
  20. Dec 18, 2025 · HouseConsidered as unfinished business. (consideration: CR H6069-6070)
  21. Dec 18, 2025 · HouseOn motion to recommit Failed by the Yeas and Nays: 205 - 213 (Roll no. 357).House · Roll call 357
  22. Dec 18, 2025Passed/agreed to in House: On passage Passed by the Yeas and Nays: 219 - 198 (Roll no. 358).House · Roll call 358
  23. Dec 18, 2025 · HouseOn passage Passed by the Yeas and Nays: 219 - 198 (Roll no. 358). (text of amendment in the nature of a substitute: CR H6044)House · Roll call 358
  24. Dec 18, 2025 · HouseMotion to reconsider laid on the table Agreed to without objection.
  25. Dec 18, 2025 · SenateReceived in the Senate.
  26. Mar 17, 2026 · SenateRead twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 357.

Committees

Committees and subcommittees the measure was referred to.

Agencies in its committees' jurisdiction

Analisa's mapping of committee jurisdiction to federal agencies; the bill may touch others, or none of these.

Who lobbied on it

Organizations whose lobbying reports (LD-2) name this measure. Spending is what they reported for those quarters on all issues, not on this measure alone.

  1. Barrick Gold of North America12 reports
    $1.9M reported (all issues)
  2. National Mining Association9 reports
    $4.2M reported (all issues)
  3. Newmont Mining Corporation6 reports
    $300K reported (all issues)
  4. Pima County6 reports
    $40K reported (all issues)Federal contractor: PIMA COUNTY$149.2K in contracts, FY2026AI match · 100%
  5. Kinross Gold U.S.A., Inc.5 reports
    $300K reported (all issues)
  6. Perpetua Resources, Corp.5 reports
    $260K reported (all issues)
  7. Earthjustice Action4 reports
    $587.3K reported (all issues)
  8. Jindalee Lithium Limited4 reports
    $190K reported (all issues)
  9. LEAGUE OF CONSERVATION VOTERS, INC4 reports
    $970K reported (all issues)
  10. Securing America's Future Energy Alliance4 reports
    $200K reported (all issues)
  11. Trout Unlimited4 reports
    $480K reported (all issues)
  12. DEFENDERS OF WILDLIFE3 reports
    $260K reported (all issues)
  13. Earthworks3 reports
    $120K reported (all issues)
  14. Ioneer USA Corporation3 reports
    $90K reported (all issues)
  15. National Parks Conservation Association3 reports
    $483.4K reported (all issues)
  16. State of Nevada3 reports
    $180K reported (all issues)
  17. Americans for Prosperity2 reports
    $885K reported (all issues)
  18. ZERO EMISSION TRANSPORTATION ASSOCIATION2 reports
    $180K reported (all issues)

Reports filed in 2025, 2026.

Sources and method

Every figure on this page traces to these records.

  • Bill status: bills and resolutions, sponsors, actions, subjects and CRS summaries (U.S. Government Publishing Office (GovInfo), from Congress.gov (Library of Congress))GovInfo Bill Status bulk data (Congress.gov; summaries by the Congressional Research Service) · data current to Oct 3, 2026 · loaded Oct 3, 2026 · license: Public domain (U.S. Government work, 17 U.S.C. § 105)
  • Members of Congress, their terms, committees and identifiers (The @unitedstates project (from the Biographical Directory of the U.S. Congress, the House and the Senate))unitedstates/congress-legislators: legislators, committees and current committee membership · data current to Oct 3, 2026 · loaded Oct 3, 2026 · license: CC0 1.0 (public domain dedication)
  • House roll-call votes (Office of the Clerk, U.S. House of Representatives)Office of the Clerk, U.S. House of Representatives, roll-call vote records · data current to Oct 3, 2026 · loaded Oct 3, 2026 · license: Public domain (U.S. Government work, 17 U.S.C. § 105)
  • Senate roll-call votes and DW-NOMINATE scores (Voteview (UCLA Department of Political Science))Lewis, Jeffrey B., Keith Poole, Howard Rosenthal, Adam Boche, Aaron Rudkin, and Luke Sonnet (2026). Voteview: Congressional Roll-Call Votes Database. https://voteview.com/ · data current to Oct 3, 2026 · loaded Oct 3, 2026 · license: Free to use with the required citation
  • Lobbying disclosures (LD-1 registrations, LD-2 quarterly reports, LD-203 contribution reports) (Clerk of the U.S. House of Representatives)Clerk of the House, Lobbying Disclosure Act filings (organizations only; lobbyists' names are not loaded) · data current to Oct 6, 2026 · loaded Oct 6, 2026 · license: Public domain (U.S. Government work, 17 U.S.C. § 105)
  • Positions are shown only where a roll call recorded them; voice votes and unanimous consent record none.
  • Money and votes are shown side by side; neither explains the other.