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Congress cancels EPA waiver for California truck pollution rule

Signed into lawH.J.Res. 89Latest action

Sponsor: Jay Obernolte · Representative · CA

AIDecoded by AI · checked against the record
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Official title: Providing 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 and Nonroad Engine Pollution Control Standards; The "Omnibus" Low NOX Regulation; Waiver of Preemption; Notice of Decision".

119th Congress

Topics: Environment & energy

Introduced:

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In plain words

The plain-language version comes first. The official text is always the reference.

Congress revoked the EPA waiver that let California enforce stricter NOx emissions rules for trucks.

35-second read · 4 questions answered below

What does this do?

This bill cancels an EPA waiver granted in January 2025 that let California enforce its "Omnibus" Low NOx Regulation, a stricter emissions standard for heavy-duty trucks and engines. Using the , Congress overturned the EPA's decision, so the waiver and California's rule no longer have legal effect.

Who does it affect?

Truck and engine manufacturers, trucking companies, and residents of California and other states that follow California's vehicle emissions standards are mainly affected.

Why does it matter?

Without the waiver, California cannot enforce its stricter NOx limits, so manufacturers face no requirement to meet them there, potentially resulting in higher air pollution levels than expected under the cleaner-engine rule.

AI-drafted summary. Check it against the official text before you act on it.

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No call to make

This is law.

Where does it stand?

  1. IntroducedApr 2, 2025
  2. House committee
  3. House vote
  4. Senate
  5. The president's desk

Right now: the president signed it. It's law.Now law

Latest action: — Became Public Law No: 119-17.

Data as of October 20, 2026

Recorded votes

Roll-call votes recorded since January 3, 2025.

  1. Senate · · Roll call 281

    As recorded

    Question
    On the H.J.Res. 89
    Result:
    Joint Resolution Passed
    49
    Nay
    46
    0
    5

    Republicans 49 yes, 4 not voting · Democrats 44 no, 1 not voting · Independents 2 no

    Official record
    How members voted

    The official record lists how each member voted.Official record

  2. Senate · · Roll call 280

    As recorded

    Question
    On the H.J.Res. 89
    Result:
    Motion to Proceed Agreed to
    51
    Nay
    46
    0
    3

    Republicans 51 yes, 2 not voting · Democrats 44 no, 1 not voting · Independents 2 no

    Official record
    How members voted

    The official record lists how each member voted.Official record

  3. House · · Roll call 112

    As recorded

    Question
    On Passage
    Result:
    Passed
    225
    Nay
    196
    0
    12

    Republicans 215 yes, 1 no, 4 not voting · Democrats 10 yes, 195 no, 8 not voting

    Official record
    How members voted

    The official record lists how each member voted.Official record

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