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Senate resolution moves to block California's zero-emission truck mandate

In committeeS.J.Res. 46Latest action

Sponsor: Deb Fischer · Senator · NE

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Official title: A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "California State Motor Vehicle and Engine Pollution Control Standards; Heavy-Duty Vehicle and Engine Emission Warranty and Maintenance Provisions; Advanced Clean Trucks; Zero Emission Airport Shuttle; Zero-Emission Power Train Certification; Waiver of Preemption; Notice of Decision".

119th Congress

Topics: Environment & energy

Introduced:

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In plain words

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SJRES 46 would void the EPA waiver letting California require more zero-emission heavy-duty trucks, pulling roughly a dozen states along with it.

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What does this do?

SJRES 46 invokes the to cancel a 2023 EPA decision that gave California a waiver to enforce its own stricter zero-emission standards for heavy-duty trucks. The waiver also covered zero-emission airport shuttle buses and emission warranty standards for heavy-duty vehicles. Without it, California's Advanced Clean Trucks program and related rules would be blocked from taking effect.

Who does it affect?

Truck manufacturers, freight and shipping companies, and businesses operating large commercial vehicle fleets in California and the roughly dozen other states that had adopted California's standards are directly affected. Residents in areas with heavy truck traffic, who face higher air pollution exposure, are also affected.

Why does it matter?

States that had chosen to follow California's stricter rules would lose that option if the resolution becomes law. The stricter emission standards had been aimed in part at reducing local air pollution in areas with heavy truck traffic.

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Where does it stand?

  1. IntroducedApr 4, 2025
  2. Senate committeeYou are here · Apr 4, 2025
  3. Senate vote
  4. House
  5. The president's desk

Right now: a Senate committee is reviewing it. If the House changes it, it goes back to the Senate before reaching the president.

Latest action: — Read twice and referred to the Committee on Environment and Public Works.

Data as of October 9, 2026
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