What it does
SourcedMining 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 by the Congressional Research Service (Reported to House, Nov 25, 2025).
Our plain-language breakdown, with what it means for you and the case for and against, is written once a bill starts to move.
What has happened
Sourced- Mar 17, 2026Read twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 357.Senate
- Dec 18, 2025Motion to reconsider laid on the table Agreed to without objection.House floor actions
- Dec 18, 2025On passage Passed by the Yeas and Nays: 219 - 198 (Roll no. 358). (text of amendment in the nature of a substitute: CR H6044) Roll call recordHouse floor actions
- Dec 18, 2025Passed/agreed to in House: On passage Passed by the Yeas and Nays: 219 - 198 (Roll no. 358). Roll call recordLibrary of Congress
- Dec 18, 2025On motion to recommit Failed by the Yeas and Nays: 205 - 213 (Roll no. 357). Roll call recordHouse floor actions
- Dec 18, 2025Considered as unfinished business. (consideration: CR H6069-6070)House floor actions
- Dec 18, 2025POSTPONED 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 floor actions
- Dec 18, 2025The previous question on the motion to recommit was ordered pursuant to clause 2(b) of rule XIX.House floor actions
- Dec 18, 2025Ms. Leger Fernandez moved to recommit to the Committee on Natural Resources. (text: CR H6049)House floor actions
- Dec 18, 2025The previous question was ordered pursuant to the rule.House floor actions
- Dec 18, 2025DEBATE - The House proceeded with one hour of debate on H.R. 1366.House floor actions
- Dec 18, 2025Rule 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 floor actions
- Dec 18, 2025Considered under the provisions of rule H. Res. 951. (consideration: CR H6044-6049)House floor actions
- Dec 18, 2025Received in the Senate.Senate
- Dec 16, 2025Rules 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 floor actions
- Nov 25, 2025Placed on the Union Calendar, Calendar No. 336.House floor actions
- Nov 25, 2025Reported (Amended) by the Committee on Natural Resources. H. Rept. 119-386.House floor actions
- Nov 25, 2025Reported (Amended) by the Committee on Natural Resources. H. Rept. 119-386.Library of Congress
- Sep 17, 2025Ordered to be Reported (Amended) by the Yeas and Nays: 25 - 17.House committee actions
- Sep 17, 2025Committee Consideration and Mark-up Session HeldHouse committee actions
- Sep 17, 2025Subcommittee on Energy and Mineral Resources DischargedHouse committee actions
- Sep 3, 2025Subcommittee Hearings HeldHouse committee actions
- Aug 29, 2025Referred to the Subcommittee on Energy and Mineral Resources.House committee actions
- Feb 14, 2025Referred to the House Committee on Natural Resources.House floor actions
- Feb 14, 2025Introduced in HouseLibrary of Congress
- Feb 14, 2025Introduced in HouseLibrary of Congress
Recorded votes
Sourced- Dec 18, 2025 · HousePassed 219–198On Passage · needed a majority
1 other recorded vote (procedure and amendments)
- Dec 18, 2025 · HouseFailed 205–213On Motion to Recommit · needed a majority
Cosponsors
- Nicholas J. Begich III R-AK-At Large
- Steven Horsford D-NV-4