Sponsors (18)
The bill centralizes vehicle and nonroad emissions regulation to simplify compliance and lower costs for nationwide manufacturers, but it removes state authority and waivers—risking higher local pollution, health harms, wasted state investments, and legal/regulatory disruption.
Manufacturers, interstate fleets, and some vehicle-related businesses face a single national emissions standard, reducing compliance complexity and likely lowering costs for companies that operate across state lines.
Federal preemption creates uniform regulatory requirements across states, simplifying administration for federal regulators and removing a patchwork of state rules.
Residents and communities (including those downwind of traffic and nonroad equipment) lose the ability to have stricter state or local vehicle/nonroad emissions rules, which could lead to higher local air pollution and increased health risks and greenhouse gas emissions where federal standards are weaker.
Removing state authority to set stricter standards strips states (including California) of regulatory tools and undermines prior state investments and programs aimed at improving local air quality.
Immediate revocation of waivers and denial of pending waiver applications creates legal and regulatory uncertainty for states, manufacturers, and industry, risking litigation and disruptive compliance shifts.
Based on analysis of 3 sections of legislative text.
Eliminates California’s Clean Air Act waiver and state opt-in for vehicle and nonroad engine emission standards, voiding existing waivers and denying pending ones.
Introduced March 14, 2025 by Mike Lee · Last progress March 14, 2025
Removes the federal statutory authority that lets California set its own new-vehicle and nonroad engine emission standards and stops other states from adopting California standards. It voids all existing California Clean Air Act waivers and treats pending waiver requests as denied effective on enactment. The bill also repeals the separate federal rule that allowed other states to opt into California vehicle standards and narrows related Clean Air Act text that had deferred to California standards. The change shifts control over motor vehicle and nonroad engine emissions standards away from California and toward a uniform federal approach, affects auto and engine sellers, state and local governments, and could change how emissions and electric vehicle rules are set and enforced. The bill contains no new spending, deadlines, or appropriations.