"This is the same authority that underpins New Mexico’s rules," according to a state Environment Department spokesperson.

The EPA plans to loosen regulations for greenhouse gas emissions, cleanup standards for coal plant waste and car emission limits, among many other clean air and water rules. Zeldin’s history with PFAS ...

California had the nation’s toughest vehicle pollution rules—but the GOP tanked them in service of 'fossil fuel donors.' ...

Legal experts say Congress misused a federal law to do so, potentially “opening up a Pandora’s box it cannot close.” ...

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

Gasoline Forever! Ruling on the Golden State’s smog policies is like a breath of fresh air for hot rods and ICE.