Mining Regulatory Clarity Act

Summary

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.

This text is taken from the official record. PoliticalRepo does not editorialize.

Timeline

1. 14 February 2025

   Introduced

   Referred to the House Committee on Natural Resources.

   Source: IntroReferral

2. 14 February 2025

   Introduced

   Introduced in House

   Source: IntroReferral

3. 14 February 2025

   Introduced

   Introduced in House

   Source: IntroReferral

4. 29 August 2025

   Referred

   Referred to the Subcommittee on Energy and Mineral Resources.

   Source: Committee

5. 3 September 2025

   Committee

   Subcommittee Hearings Held

   Source: Committee

6. 17 September 2025

   Vote

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

   Source: Committee

7. 17 September 2025

   Committee

   Committee Consideration and Mark-up Session Held

   Source: Committee

8. 17 September 2025

   Committee

   Subcommittee on Energy and Mineral Resources Discharged

   Source: Committee

9. 25 November 2025

   Calendars

   Placed on the Union Calendar, Calendar No. 336.

   Source: Calendars

10. 25 November 2025

    Reported

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

    Source: Committee

11. 25 November 2025

    Reported

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

    Source: Committee

12. 16 December 2025

    Reported

    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.

    Source: Floor

13. 18 December 2025

    Introduced

    Received in the Senate.

    Source: IntroReferral

14. 18 December 2025

    Passed

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

    Source: Floor

15. 18 December 2025

    Vote

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

    Source: Floor

16. 18 December 2025

    Vote

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

    Source: Floor

17. 18 December 2025

    Vote

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

    Source: Floor

18. 18 December 2025

    Floor

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

    Source: Floor

19. 18 December 2025

    Floor

    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.

    Source: Floor

20. 18 December 2025

    Floor

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

    Source: Floor

21. 18 December 2025

    Floor

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

    Source: Floor

22. 18 December 2025

    Floor

    The previous question was ordered pursuant to the rule.

    Source: Floor

23. 17 March 2026

    Introduced

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

    Source: Calendars

Votes

Versions

No version snapshots stored. Document URLs remain at the source.

Documents

5 official files

• Placed on Calendar Senate

  Placed on Calendar Senate · EN · 17 March 2026

  ViewDownloadOpen at official source

• Engrossed in House

  Engrossed in House · EN · 18 December 2025

  ViewDownloadOpen at official source

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• Reported in House

  Reported in House · EN · 25 November 2025

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• Reported to House

  summary · EN · 25 November 2025

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• Introduced in House

  Introduced in House · EN · 14 February 2025

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Sponsors

• Rep. Amodei, Mark E. [R-NV-2] · R · Sponsor
• Rep. Horsford, Steven [D-NV-4] · D · Sponsor
• Rep. Begich, Nicholas J. [R-AK-At Large] · R · Cosponsor
• · hsii00 · Standing

Related records

• related to → Mining Regulatory Clarity Act
• related to ← Department of the Interior, Environment, and Related Agencies Appropriations Act, 2026
• related to ← Providing 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.
• amends ← 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.