HJRES-89 — 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".

YourVoice.Now SummaryEnvironmental Concerns

This resolution cancels an Environmental Protection Agency waiver that allowed California to enforce its own stricter pollution standards for vehicle and nonroad engines, known as the 'Omnibus' Low NOx Regulation, which limits nitrogen oxide emissions from truck and equipment engines. The waiver let California require lower-polluting engines than the federal minimum, and other states were permitted to adopt the same standard. Congress is using the Congressional Review Act to disapprove the EPA's decision, so the waiver no longer has legal effect. This affects engine and truck manufacturers, fleet operators, and states that had adopted California's stricter nitrogen oxide limits. The result is that California and those states lose the authority to enforce this specific low-NOx engine standard.

Environmental Concerns

California low-NOx engine emission waiver — Nullified, ending the state's stricter nitrogen-oxide rule

Congressional Summary

This joint resolution revokes the waiver granted to the California Air Resources Board regarding new emissions standards for new 2024 and subsequent model year on-road heavy-duty vehicles and engines, off-road diesel engines, and off-road diesel-fueled auxiliary power units. (Under the Clean Air Act, California may seek waivers of the preemption prohibiting states from enacting certain emission standards.)Specifically, the joint resolution nullifies the Environmental Protection Agency notice titled California State Motor Vehicle and Engine and Nonroad Engine Pollution Control Standards; The ‘Omnibus’ Low NOX Regulation; Waiver of Preemption; Notice of Decision.

Legislative Subjects

Administrative law and regulatory proceduresAir qualityCaliforniaClimate change and greenhouse gasesCongressional oversightEnvironmental Protection Agency (EPA)Federal preemptionHybrid, electric, and advanced technology vehiclesMotor vehicles

Details

Congress: 119th
Chamber: House
Status: summarized
Action: Public Law
Action Date: 2025-06-12
Date Added: 2026-07-18
Source: Congress.gov →

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