The U.S. Senate voted Thursday to prevent California from enforcing regulations on tailpipe emission from new cars and trucks ...

Not only is California's phase-out of internal-combustion vehicles by 2035 in the crosshairs, its ability to set its own ...

Senate Republicans have voted to establish a new precedent that will allow them to roll back clean air standards in ...

California Gov. Gavin Newsom and state Attorney General Rob Bonta announced Thursday plans to file a lawsuit in response to the Senate blocking the state's first-in-the-nation rule banning the sale of ...

The U.S. Senate is moving forward with an effort to block California's nation-leading standards for vehicle emissions.

A waiver from the federal government has long allowed California to set its own stricter tailpipe emissions. But now, fuel companies are suing. On Wednesday, the Supreme Court will weigh whether ...

The Republican-controlled U.S. House voted Thursday to block California from enforcing first-in-the-nation rules phasing out ... standards to cut tailpipe emissions from medium- and heavy-duty ...

U.S. Supreme Court justices appeared sympathetic on Wednesday to a bid by fuel producers to challenge California's standards for vehicle emissions and electric cars under a federal air pollution law ...

Under the Clean Air Act, states are generally prohibited from setting their own tailpipe emissions for ... in December was the Omnibus Low-NOx Emissions Rule, which imposes aggressive emissions ...

(AP) — Congress may stop California from implementing its first-in-the nation rule banning the sale ... to follow some of the state's tailpipe emission standards. But the companies have not ...

The Republican-controlled U.S. House voted Thursday to block California from enforcing first-in-the-nation rules phasing out ... standards to cut tailpipe emissions from medium- and heavy-duty ...