California has delayed revoking 17,000 trucker licenses following a lawsuit by Sikh and Asian advocacy groups, who claim immigrant drivers are being unfairly targeted. This action comes after the U.S. Transportation Department threatened to withhold $160 million in federal funding over the state's failure to enforce English proficiency and immigration status checks for truckers. The department previously withheld $40 million, citing concerns for public safety, particularly after a fatal crash involving an unauthorized immigrant truck driver. California officials state they are implementing reforms to satisfy federal requirements.