California waivers face bumpy future in Congress

By Amelia Davidson | 06/16/2026 06:47 AM EDT

Republican leaders have yet to spell out how they will handle a new batch of California air pollution rule waivers that EPA wants them to repeal.

Sen. Lisa Murkowski (R-Alaska) speaks with reporters at the U.S. Capitol.

Sen. Lisa Murkowski (R-Alaska) may need convincing before agreeing to repeal another series of California Clean Air Act rule waivers. Francis Chung/POLITICO

The Trump administration’s latest attack on California’s vehicle emissions standards faces a complicated path to congressional approval — and already some warning signs are emerging in the Senate.

EPA last week submitted four California air pollution rule waivers to Congress, where Republicans can use the Congressional Review Act to overturn them. It follows a successful push by the GOP last year to nullify three Biden-era waivers for California.

The Clean Air Act allows the state to set stricter pollution rules than the federal government with EPA approval. Several other states follow California’s lead.

Advertisement

“For years California has weaponized the Clean Air Act to push far-left environmental policies, raising costs and limiting choices for families and businesses to purchase the vehicles and equipment they want and need,” House Energy and Commerce Chair Brett Guthrie (R-Ky.) said in a statement Monday.

GET FULL ACCESS