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H.R. 1366119th CongressINTRODUCED

Mining Regulatory Clarity Act

Introduced Feb 14, 2025Mark E. Amodei (R-NV)2 cosponsorsSource

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.

Legislative Journey

Mar 17, 2026

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

Senate
Dec 18, 2025

Received in the Senate.

Senate
Dec 18, 2025

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

House
Dec 18, 2025

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

House
Dec 18, 2025

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

Dec 18, 2025

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

House
Dec 18, 2025

Considered as unfinished business. (consideration: CR H6069-6070)

House
Dec 18, 2025

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.

House
Dec 18, 2025

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

House
Dec 18, 2025

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

House
Dec 18, 2025

The previous question was ordered pursuant to the rule.

House
Dec 18, 2025

DEBATE - The House proceeded with one hour of debate on H.R. 1366.

House
Dec 18, 2025

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.

House
Dec 18, 2025

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

House
Dec 16, 2025

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.

House
Nov 25, 2025

Placed on the Union Calendar, Calendar No. 336.

House
Nov 25, 2025

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

House
Nov 25, 2025

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

Sep 17, 2025

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

House
Sep 17, 2025

Committee Consideration and Mark-up Session Held

House
Sep 17, 2025

Subcommittee on Energy and Mineral Resources Discharged

House
Sep 3, 2025

Subcommittee Hearings Held

House
Aug 29, 2025

Referred to the Subcommittee on Energy and Mineral Resources.

House
Feb 14, 2025

Referred to the House Committee on Natural Resources.

House
Feb 14, 2025

Introduced in House

Feb 14, 2025

Introduced in House