Critics of the state's power to set stricter air pollution standards than the federal government say they hope the justices ...

The Supreme Court on Friday said it would take up an appeal in a dispute related to California's leading standards for ...

The Supreme Court says it will take up a business-backed appeal that could make it easier to challenge federal regulations, ...

California wants to move away from gas-powered cars. But fuel producers argue the state is acting as a "quasi-federal ...

WASHINGTON — Stepping into a legal fight that has been raging for years, the Supreme Court said Friday that it would decide ...

The Supreme Court said it will wade into a case over whether California can set its own vehicle emissions standards under a ...

The justices agreed to decide whether industry groups have suffered the sort of injury that gave them standing to sue over an ...

The U.S. Supreme Court agreed on Friday to hear a bid by fuel producers to challenge California's standards for vehicle ...

The Supreme Court agreed Monday to examine California’s authority to set strict vehicle emissions standards, potentially ...

The Supreme Court indicated Friday that it will take up a case that could revive industry efforts to axe California’s ...

Stepping into a legal fight that has been raging for years, the Supreme Court said it would decide whether California can set ...