U.S. Senate vote to nix California tailpipe emissions standard blocks 17 other states

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The U.S. Senate voted early Thursday to prevent California from enforcing regulations on tailpipe emission from new cars and trucks, upending state regulations for the nearly 40% of Americans whose states follow California standards.

The House has already passed an identical measure, meaning the Senate vote sends the resolution to President Donald Trump’s desk.

The 51-46 vote, with Michigan Democrat Elissa Slotkin joining all Republicans present to vote in favor, cleared a Congressional Review Act resolution repealing Environmental Protection Agency waivers that allow California to set regulations for emissions from cars and light-duty trucks.

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Democrats blasted the near-party-line vote for contradicting the Senate parliamentarian, who’d ruled the waiver that the EPA had granted to California to set its own tailpipe standards was not a regulation that could be rolled back under the Congressional Review Act, or CRA.

https://washingtonstatestandard.com/2025/05/22/repub/u-s-senate-vote-to-nix-california-tailpipe-emissions-standard-blocks-17-other-states/