S.J.Res. 47 · Where this bill is now
Became law through another bill
Its text was included in H.J.Res. 89, Public Law 119-17 (per the Congressional Research Service). This bill number itself: In committee.
See H.J.Res. 89 on Congress.gov ↗
What this bill does
In plain words · AI-written from the official summaryCongressional disapproval of EPA California emissions waiver
This resolution would overturn an EPA decision to allow California to enforce stricter pollution controls on heavy-duty vehicles and engines. The EPA had granted California a waiver under the Clean Air Act, which typically lets the federal government set emission standards that states can't override. This resolution would nullify that waiver, meaning California would lose the ability to enforce its own stricter standards.
How it affects you
This mainly affects California and potentially manufacturers of heavy-duty vehicles and engines. If this resolution passes, California would no longer be able to enforce its stricter pollution rules on trucks and diesel engines in the state, which could affect air quality there and the costs for companies operating vehicles in California.
Read the official summary (Introduced in Senate, Apr 4, 2025)
This 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 (90 Fed. Reg. 643) and published on January 6, 2025. Among other elements, the notice grants the California Air Resources Board request for a waiver for its Heavy-Duty Vehicle and Engine Omnibus Low NOX regulations. (Under the Clean Air Act, California may seek waivers of the preemption prohibiting states from enacting certain emission standards.)
Written by AI (Claude) using only the official summary by the Congressional Research Service, the Library of Congress’s nonpartisan research staff. It can miss nuance, so check the official summary and the bill text for details.
1st SessionS.J.Res. 47
JOINT RESOLUTION
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 and Nonroad Engine Pollution Control Standards; The 'Omnibus' Low NOx Regulation; Waiver of Preemption; Notice of Decision".
Sponsor: Sen. Markwayne Mullin (R-OK) · Introduced Apr 4, 2025 · Environmental Protection · 1 version of the text
Sources: Congress.gov actions and votes · bill text from GovInfo · latest official action Apr 4, 2025: “Read twice and referred to the Committee on Environment and Public Works.”