Stop CARB Act of 2025
Sponsored By: Senator Lee, Mike [R-UT]
Introduced
Summary
Removes California's special vehicle-emission waivers under the Clean Air Act. If enacted, the bill would also bar states from adopting emissions standards for many nonroad engines and locomotives.
Show full summary
- California and other state or local governments: Would lose the authority to adopt or enforce state-specific standards for new motor vehicles and for nonroad engines used in construction, farming, and locomotives.
- Vehicle and engine manufacturers: Would no longer face California-specific new motor vehicle emission standards or the statutory pathway that tied federal programs to California standards.
- EPA and waiver applicants: If enacted, previously issued waivers would be void and any waiver applications pending before the EPA Administrator would be deemed denied.
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Bill Overview
Analyzed Economic Effects
2 provisions identified: 0 benefits, 0 costs, 2 mixed.
Cancel California waivers and standards
If enacted, this bill would cancel existing EPA waivers that let some states use California vehicle rules. It would deny pending waiver applications as of the date of enactment. It would also repeal the federal rule that lets states adopt California motor-vehicle standards. The bill would remove many federal references to those waivers and California authorities. Vehicle makers, states, and drivers in some states could see different rules and costs.
Ban state rules on nonroad engines
If enacted, the bill would bar any State or local government from adopting or enforcing rules that control emissions from nonroad engines and vehicles. That specifically covers new engines in construction equipment, farm machines, and new locomotives or locomotive engines. The ban would take effect upon enactment. Owners, small farms, construction firms, rail operators, and state regulators would see changes in what rules can apply to their machines.
Sponsors & CoSponsors
Sponsor
Lee, Mike [R-UT]
UT • R
Cosponsors
Sen. Cassidy, Bill [R-LA]
LA • R
Sponsored 3/14/2025
Sen. Ricketts, Pete [R-NE]
NE • R
Sponsored 3/14/2025
Sen. Marshall, Roger [R-KS]
KS • R
Sponsored 3/14/2025
Sen. Daines, Steve [R-MT]
MT • R
Sponsored 3/14/2025
Sen. Risch, James E. [R-ID]
ID • R
Sponsored 3/14/2025
Sen. Scott, Rick [R-FL]
FL • R
Sponsored 3/14/2025
Sen. Cramer, Kevin [R-ND]
ND • R
Sponsored 3/14/2025
Dan Sullivan
AK • R
Sponsored 3/14/2025
Markwayne Mullin
OK • R
Sponsored 3/14/2025
Sen. Crapo, Mike [R-ID]
ID • R
Sponsored 3/14/2025
Sen. Justice, James C. [R-WV]
WV • R
Sponsored 3/14/2025
Shelley Capito
WV • R
Sponsored 3/14/2025
Sen. Cruz, Ted [R-TX]
TX • R
Sponsored 3/14/2025
Sen. Lummis, Cynthia M. [R-WY]
WY • R
Sponsored 3/14/2025
Sen. Scott, Tim [R-SC]
SC • R
Sponsored 5/21/2025
Sen. Moreno, Bernie [R-OH]
OH • R
Sponsored 9/29/2025
Sen. McCormick, David [R-PA]
PA • R
Sponsored 4/28/2026
Roll Call Votes
No roll call votes available for this bill.
View on Congress.gov