The ruling marks a pivotal victory for American fuel manufacturers and a severe political setback for Newsom, whose plan to phase out gas-powered cars by 2035 was a cornerstone of his climate platform. It follows President Donald Trump’s recent move to dismantle several California environmental rules, signaling a new chapter in the fight over America’s energy future. Meanwhile, in a separate 6–3 decision, the high court sided with federal immigration authorities, reinstating their power to conduct wide-ranging enforcement sweeps. Together, the twin rulings underscore a clear message from the Supreme Court: state overreach and judicial leniency are no longer tolerated.