Overturn the Environmental Protection Agency rule “California State Motor Vehicle and Engine and Nonroad Engine Pollution Control…”

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.

Summary by the Congressional Research Service (Public Law), via GovInfo BILLSTATUS. Text, sponsors and history on Congress.gov. Sponsor: Rep. Obernolte, Jay [R-CA-23].

Passed 225–196 on April 30, 2025 · On Passage

Democrats 10–195, Republicans 215–1

Source: Official roll call · Voteview

Joint Resolution Passed 50–46 on May 22, 2025 · On the Joint Resolution

Democrats 0–44, Independents 0–2, Republicans 49–0

Source: Official roll call · Voteview