# California vehicle emissions waiver legal dispute > Live situation record from CLSTR: https://clstr.news/situations/california-vehicle-emissions-waiver-legal-dispute > Updated: 2026-09-03T22:17:59.000Z. Sources: 2. Developments: 2. Four Republican senators introduced legislation using the Congressional Review Act to repeal Clean Air Act waivers that permit California to enforce vehicle emissions standards stricter than federal regulations. These waivers, which include the 2022 Advanced Clean Cars I rules, are central to California’s ability to mandate higher electric vehicle sales and tighter tailpipe limits. California challenged the move, arguing the attempt to use the Congressional Review Act was an “unlawful attempt to circumvent administrative procedure.” A federal judge subsequently issued a preliminary injunction blocking the Environmental Protection Agency (EPA) from targeting the four preemption waivers. U.S. District Judge Beryl Howell ordered the EPA to “restore the status quo,” providing a temporary legal victory for California’s independent environmental standards while the EPA considers an appeal. ## Timeline ### 2026-09-03: California retains strict clean air waivers after federal judge blocks EPA action A federal judge blocked the EPA from revoking California’s Clean Air Act waivers, ordering the agency to restore the status quo regarding the state’s authority to set stricter vehicle emissions standards. 2 sources. https://clstr.news/cluster/california-retains-strict-clean-air-waivers-after-federal-judge-blocks-epa-action ### 2026-08-06: US Senators Push to Repeal California Vehicle Emissions Waivers Four Republican senators seek to repeal California's vehicle emissions waivers via the Congressional Review Act, targeting the Advanced Clean Cars I rules and threatening the state's climate authority and EV‑dr 2 sources. https://clstr.news/cluster/us-senators-push-to-repeal-california-vehicle-emissions-waivers --- Cite as: California vehicle emissions waiver legal dispute. CLSTR, https://clstr.news/situations/california-vehicle-emissions-waiver-legal-dispute