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H.R. 1366Passed House

Mining Regulatory Clarity Act

Introduced: Feb 14, 2025

Latest action date: Mar 17, 2026

Latest development

Read twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 357.

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Congress
119th Congress
Introduced
Feb 14, 2025
Recorded roll calls
2

Status detail: The full action history records passage in the House.

Plain-language overview

What this bill does

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.

Official summary from Congress.gov.

Civixly topics

What this legislation is about

Civixly topics make federal and state legislation comparable. They are derived from the official CRS policy area and legislative subjects.

Official CRS policy area

Environmental Protection

View 3 official legislative subjects
Government trust fundsLand use and conservationMining

Committee activity

Committees and subcommittees that received, reviewed, marked up, or reported this legislation.

houseStanding

Natural Resources Committee

Official committee record ↗
  1. Referred To
  2. Discharged from
  3. Markup By
  4. Reported By
  5. Unknown
  6. Unknown
houseSubcommittee

Energy and Mineral Resources Subcommittee

Official committee record ↗
  1. Referred to
  2. Hearings By (subcommittee)

Amendments

Proposed changes to this measure, with their latest official outcome or action from Congress.gov.

View amendments1 amendment
H.Amdt. 141houseAgreed toDec 18, 2025

Pursuant to the provisions of H. Res. 951, the amendment in the nature of a substitute recommended by the Committee on the Natural Resources is considered adopted.

Latest action: On agreeing to the Rules amendment (A001) Agreed to without objection.

Congress.gov ↗

Checked against Congress.gov Oct 15, 2026.

Action timeline

Newest action first. Action language comes from the official Congress.gov record.

View full action timeline26 actions
  1. Read twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 357.

    CalendarsSenate
  2. Motion to reconsider laid on the table Agreed to without objection.

    FloorHouse floor actions
  3. Passed/agreed to in House: On passage Passed by the Yeas and Nays: 219 - 198 (Roll no. 358).

    FloorLibrary of Congress
  4. On passage Passed by the Yeas and Nays: 219 - 198 (Roll no. 358). (text of amendment in the nature of a substitute: CR H6044)

    FloorHouse floor actions
  5. On motion to recommit Failed by the Yeas and Nays: 205 - 213 (Roll no. 357).

    FloorHouse floor actions
  6. Considered as unfinished business. (consideration: CR H6069-6070)

    FloorHouse floor actions
  7. POSTPONED 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.

    FloorHouse floor actions
  8. The previous question on the motion to recommit was ordered pursuant to clause 2(b) of rule XIX.

    FloorHouse floor actions
  9. Ms. Leger Fernandez moved to recommit to the Committee on Natural Resources. (text: CR H6049)

    FloorHouse floor actions
  10. The previous question was ordered pursuant to the rule.

    FloorHouse floor actions
  11. DEBATE - The House proceeded with one hour of debate on H.R. 1366.

    FloorHouse floor actions
  12. 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.

    FloorHouse floor actions
  13. Considered under the provisions of rule H. Res. 951. (consideration: CR H6044-6049)

    FloorHouse floor actions
  14. Received in the Senate.

    IntroReferralSenate
  15. Rules 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.

    FloorHouse floor actions
  16. Placed on the Union Calendar, Calendar No. 336.

    CalendarsHouse floor actions
  17. Reported (Amended) by the Committee on Natural Resources. H. Rept. 119-386.

    CommitteeHouse floor actions
  18. Reported (Amended) by the Committee on Natural Resources. H. Rept. 119-386.

    CommitteeLibrary of Congress
  19. Committee Consideration and Mark-up Session Held

    CommitteeHouse committee actions
  20. Subcommittee on Energy and Mineral Resources Discharged

    CommitteeHouse committee actions
  21. Ordered to be Reported (Amended) by the Yeas and Nays: 25 - 17.

    CommitteeHouse committee actions
  22. Subcommittee Hearings Held

    CommitteeHouse committee actions
  23. Referred to the Subcommittee on Energy and Mineral Resources.

    CommitteeHouse committee actions
  24. Introduced in House

    IntroReferralLibrary of Congress
  25. Referred to the House Committee on Natural Resources.

    IntroReferralHouse floor actions
  26. Introduced in House

    IntroReferralLibrary of Congress

Roll-call votes

Recorded House and Senate votes connected to this bill. Your representatives appear first when available.

FailedDec 18, 2025House · Roll call 357

On Motion to Recommit

213 Nay205 Yea15 Not Voting
View 433 recorded positions
Cleo FieldsNot Voting
David ScottYea
Doug LaMalfaNay
Eric SwalwellNot Voting
Greg CasarNot Voting
Joe CourtneyNot Voting
Joe WilsonNot Voting
Lucy McBathNot Voting
Marjorie Taylor GreeneNot Voting
Max L. MillerNot Voting
Maxine WatersNot Voting
Nikema WilliamsNot Voting
Sheila Cherfilus-McCormickYea
Steve WomackNot Voting
Tony GonzalesNay
Wesley HuntNot Voting
PassedDec 18, 2025House · Roll call 358

On Passage

219 Yea198 Nay16 Not Voting
View 433 recorded positions
Cleo FieldsNot Voting
David ScottNay
Doug LaMalfaYea
Eric SwalwellNot Voting
Glenn GrothmanNot Voting
Greg CasarNot Voting
Joe CourtneyNot Voting
Joe WilsonNot Voting
Lucy McBathNot Voting
Marjorie Taylor GreeneNot Voting
Max L. MillerNot Voting
Maxine WatersNot Voting
Nikema WilliamsNot Voting
Sheila Cherfilus-McCormickNay
Steve WomackNot Voting
Tony GonzalesYea
Wesley HuntNot Voting

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Sources: Congress.gov and official House and Senate vote records.

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Base metadata check pending · Civixly summary check pending · Action timeline checked Oct 15, 2026 · Complete sponsorship check pending · Topics checked Oct 15, 2026 · Committees checked Oct 15, 2026 · Status checked Oct 15, 2026 · Related bills checked Oct 15, 2026.