H.J.Res. 89Signed into lawEnvironment & energy
Congress cancels EPA waiver for California truck pollution rule
Data as of July 22, 2026
Congress revoked the EPA waiver that let California enforce stricter NOx emissions rules for trucks.AI-decoded35-second read · 4 questions answered below
Decoded
AI-decodedWhat 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 Congressional Review Act, 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.
Where does it stand?
- Introduced
- House committee
- House vote
- Senate
- President's desk
Right now: the President signed it. It's law.Now law
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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".
- Introduced:
- April 2, 2025
- Latest action:
- June 12, 2025
Became Public Law No: 119-17.
Read the official bill on Congress.gov