California policymakers and environmentalists view recent Supreme Court actions as a small victory for clean air, but worry ...

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

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

The case of a Southern California man convicted of attempted murder will test a law that says a prospective juror's ...

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 ...

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

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

BYU joins other religious schools asking the court to reverse a ruling that forced a Pentecostal university to accept board ...

A key case regarding California’s ability to receive environmental waivers, Ohio vs. EPA, won’t be taken up by the Supreme ...

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