The Supreme Court declined Monday to take up an appeal from conservative states challenging California’s ability to establish ...

Supreme Court dismisses a red-state constitutional claim that targeted California's power to fight air pollution.

The U.S. Supreme Court's nine-month term that began in October includes cases involving guns, gender-affirming medical care ...

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

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

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

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 ...

The petition to the high court says indigent clients are losing due process rights because they don’t have verbatim records ...

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