- StatesCreates a single nationwide regulatory standard, reducing automaker compliance complexity across states.
- ManufacturersLowers manufacturers' and fuel producers' costs by avoiding multiple, potentially stricter state-specific requirements.
- StatesReduces regulatory burden for businesses operating in multiple states, simplifying product design and distribution.
Stop CARB Act of 2025
Referred to the House Committee on Energy and Commerce.
This bill amends the Clean Air Act to remove California’s special waiver authority under section 209, repeal the section allowing other States to adopt California motor vehicle emission standards (section 177), and bar States from adopting certain nonroad engine and vehicle emission requirements. It declares prior and pending California waivers void, repeals several CARB-related statutory provisions, and makes conforming amendments to related Clean Air Act sections.
Progressives emphasize environmental, public-health, and state-innovation losses.
Relative to its intended legislative type, this bill is a clearly drafted substantive statutory rewrite: it uses precise amendatory language and numerous conforming edits to effect a broad policy change removing particular state authorities under the Clean Air Act.
This bill amends the Clean Air Act to remove California’s special waiver authority under section 209, repeal the section allowing other States to adopt California motor vehicle emission standards (section 177), and bar States from adopting certain nonroad engine and vehicle emission requirements.
It declares prior and pending California waivers void, repeals several CARB-related statutory provisions, and makes conforming amendments to related Clean Air Act sections.
The changes centralize vehicle and nonroad emissions standard authority at the federal level and eliminate the statutory pathway for States to follow California standards.
Sweeping preemption of state environmental authority on a contentious issue has low passage probability without broad bipartisan support or reconciliation vehicle.
Relative to its intended legislative type, this bill is a clearly drafted substantive statutory rewrite: it uses precise amendatory language and numerous conforming edits to effect a broad policy change removing particular state authorities under the Clean Air Act.
Progressives emphasize environmental, public-health, and state-innovation losses.
Who stands to gain, and who may push back.
These are examples from the analysis, not a ranked list of the most-affected groups.
- StatesRemoves a pathway states used to adopt stricter vehicle emissions, likely reducing overall emissions reductions ambitio…
- Federal agenciesLimits state authority to set higher environmental protections, raising federalism and states' rights concerns.
- Potential burdenMay slow adoption of zero-emission vehicle policies and related clean-technology investment and job growth.
Why the argument around this bill splits.
Progressives emphasize environmental, public-health, and state-innovation losses.
Likely strongly critical.
They will view the bill as removing a key tool States use to pursue stronger climate and public health protections.
They will be concerned about higher emissions, rollback of progressive state policy innovation, and weakened environmental justice protections.
Mixed and cautious.
They will appreciate reduced multi-state regulatory fragmentation but worry about removing state flexibility and the timing of federal replacements.
Concerns include legal challenges, transitional costs for manufacturers, and potential environmental impacts if federal standards weaken.
Generally supportive.
They will view the bill as preventing California from imposing extra regulatory burdens nationwide and restoring national regulatory uniformity.
They will emphasize relief for manufacturers and protection against state-driven economic disruptions.
The path through Congress.
Reached or meaningfully advanced
Reached or meaningfully advanced
Still ahead
Still ahead
Still ahead
Sweeping preemption of state environmental authority on a contentious issue has low passage probability without broad bipartisan support or reconciliation vehicle.
- Absent congressional cost estimate or CBO score
- Potential for extensive litigation challenging immediate repeal
Recent votes on the bill.
No vote history yet
The bill has not accumulated any surfaced votes yet.
Go deeper than the headline read.
Progressives emphasize environmental, public-health, and state-innovation losses.
Sweeping preemption of state environmental authority on a contentious issue has low passage probability without broad bipartisan support or…
Relative to its intended legislative type, this bill is a clearly drafted substantive statutory rewrite: it uses precise amendatory language and numerous conforming edits to effect a broad policy change removing particu…
Go beyond the headline summary with full stakeholder mapping, legislative design analysis, passage barriers, and lens-by-lens tradeoff breakdowns.