House bill · H.R. 1366 (119th Congress)
Mining Regulatory Clarity Act
U.S. House of Representatives
Sponsor: Mark E. Amodei (U.S. Representative, NV-2, Republican)
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From Congress.gov and official rosters. This record was last updated Aug 3, 2026. About our data
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.
Summary from the Congressional Research Service. How we handle summaries
Where it stands
Passed one of the two chambers; it still needs the other.
- Introduced
- In committee
- Up for a vote
- Passed one chamber
- Passed
- Enacted
Committee
House Committee on Natural Resources · U.S. House of Representatives
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Cosponsors
2
Cosponsors listed on Congress.gov, shown A to Z.
- Democratic1
- Republican1
This bill has cosponsors from more than one party.
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Related bills
- H.R. 4754Department of the Interior, Environment, and Related Agencies Appropriations Act, 2026Related bill
- S. 544Mining Regulatory Clarity ActRelated bill
- H.Res. 951Providing 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.Related bill, procedurally related
As identified by Congress.gov.
Full history
- Mar 17, 2026
Introduced
Read twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 357.
U.S. House
- Mar 17, 2026
Read twice. Placed on Senate Legislative Calendar Under General Orders. Calendar No. 357.
Read twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 357.
U.S. Senate
- Dec 18, 2025
Debate - the House Proceeded With One Hour of Debate on H.R. 1366.
DEBATE - The House proceeded with one hour of debate on H.R. 1366.
U.S. House of Representatives
- Dec 18, 2025
Passed a chamber
Motion to reconsider laid on the table Agreed to without objection.
- Dec 18, 2025
Passed a chamber
Motion to reconsider laid on the table Agreed to without objection.
Show full history (31 earlier events)Show less history
- Dec 18, 2025
Passed a chamber
Motion to reconsider laid on the table Agreed to without objection.
- Dec 18, 2025
On Motion to Recommit Failed by the Yeas and Nays: 205 - 213 (roll no. 357).
On motion to recommit Failed by the Yeas and Nays: 205 - 213 (Roll no. 357).
- Dec 18, 2025
On Motion to Recommit Failed by the Yeas and Nays: 205 - 213 (roll no. 357).
On motion to recommit Failed by the Yeas and Nays: 205 - 213 (Roll no. 357).
- Dec 18, 2025
On Motion to Recommit Failed by the Yeas and Nays: 205 - 213 (roll no. 357).
On motion to recommit Failed by the Yeas and Nays: 205 - 213 (Roll no. 357).
- Dec 18, 2025
Passed a chamber
Passed/agreed to in House: On passage Passed by the Yeas and Nays: 219 - 198 (Roll no. 358).
U.S. House of Representatives
- Dec 18, 2025
Sent to the executive
Received in the Senate.
U.S. Senate
- Dec 16, 2025
Reported out of committee
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.
U.S. House of Representatives
- Nov 25, 2025
Placed on the Union Calendar, Calendar No. 336.
- Nov 25, 2025
Placed on the Union Calendar, Calendar No. 336.
- Nov 25, 2025
Placed on the Union Calendar, Calendar No. 336.
- Nov 25, 2025
Reported out of committee
Reported (Amended) by the Committee on Natural Resources. H. Rept. 119-386.
- Nov 25, 2025
Reported out of committee
Reported (Amended) by the Committee on Natural Resources. H. Rept. 119-386.
- Nov 25, 2025
Reported out of committee
Reported (Amended) by the Committee on Natural Resources. H. Rept. 119-386.
- Sep 17, 2025
Committee vote
Committee Consideration and Mark-up Session Held
- Sep 17, 2025
Committee vote
Committee Consideration and Mark-up Session Held
- Sep 17, 2025
Committee vote
Committee Consideration and Mark-up Session Held
- Sep 17, 2025
Reported out of committee
Ordered to be Reported (Amended) by the Yeas and Nays: 25 - 17.
- Sep 17, 2025
Reported out of committee
Ordered to be Reported (Amended) by the Yeas and Nays: 25 - 17.
- Sep 17, 2025
Reported out of committee
Ordered to be Reported (Amended) by the Yeas and Nays: 25 - 17.
- Sep 17, 2025
In committee
Subcommittee on Energy and Mineral Resources Discharged
- Sep 17, 2025
In committee
Subcommittee on Energy and Mineral Resources Discharged
- Sep 17, 2025
In committee
Subcommittee on Energy and Mineral Resources Discharged
- Sep 3, 2025
Hearing held
Subcommittee Hearings Held
- Sep 3, 2025
Hearing held
Subcommittee Hearings Held
- Sep 3, 2025
Hearing held
Subcommittee Hearings Held
- Aug 29, 2025
Referred to committee
Referred to the Subcommittee on Energy and Mineral Resources.
- Aug 29, 2025
Referred to committee
Referred to the Subcommittee on Energy and Mineral Resources.
- Aug 29, 2025
Referred to committee
Referred to the Subcommittee on Energy and Mineral Resources.
- Feb 14, 2025
Introduced
Introduced in House
U.S. House of Representatives
- Feb 14, 2025
Introduced
Introduced in U.S. House
U.S. House
- Feb 14, 2025
Referred to committee
Referred to the House Committee on Natural Resources.
U.S. House of Representatives
Read the record
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