San Antonio’s U.S. Reps. Greg Casar and Joaquin Castro joined 10 other Texas congressional Democrats in asking the Justice Department to take action against state officials who break the law under Gov. Greg Abbott’s Operation Lone Star. In a letter sent Monday, the Democrats argue that Abbott’s controversial $4.5 billion immigration crackdown — which authorizes local authorities to arrest border crossers on minor offenses such as trespassing — has resulted in gross civil rights violations.