The 52-46 party-line vote marked the first time in the 55-year history of the Clean Air Act that Congress has moved to weaken the power of the landmark environmental law.

I am alarmed that California's clean-air standards face threats from Senate Republicans, risking American innovation in electric vehicles and global market competitiveness.

It also marks the first time in the Clean Air Act’s 55-year history that Congress has scaled back protections under the landmark environmental law. Sen. John Curtis (R-Utah) ...

Because of its highly polluted air, Congress gave California the power to set its own, more stringent vehicle standards in the 1967 Clean Air Act. Before now, the federal government has never ...

Congress has voted to undo a Clean Air Act regulation that strictly controls the amount of toxic air pollutants emitted by many industrial facilities like oil refineries, chemical plants, and ...

Congress is expected to undo a Clean Air Act regulation that strictly controls the amount of toxic air pollutants emitted by many industrial facilities like oil refineries, chemical plants and ...

The Supreme Court on Wednesday issued two rulings on where certain challenges to actions taken by the Environmental Protection Agency under the Clean Air Act must be filed. In the […] ...

In 2022, the U.S. Supreme Court overturned the Clean Power Plan, ruling that the EPA lacked authority under section 111 of the federal Clean Air Act to require existing power plants to shift ...

7 EPA: "California State Motor Vehicle Pollution Control Standards; Notice of Decision Denying a Waiver of Clean Air Act Preemption for California's 2009 and Subsequent Model Year Greenhouse Gas ...

Since its inception, when President Richard Nixon signed the Clean Air Act in 1970, the landmark legislation has had overwhelming bipartisan support. In 1990, it was revised and strengthened under ...