WASHINGTON (AP) — The U.S. Supreme Court is letting states set their own standards for meal and rest breaks by airline crews. On Thursday, the court declined to hear an appeal against a California law that gives flight crews that are based in the state meal and rest breaks not required by federal rules. It’s a setback for airlines, which favor less-generous working rules set by the Federal Aviation Administration. An appeals court in San Francisco upheld the California law last year, saying that federal regulation of airlines is limited to prices, routes and services.