Washington’s inaction on immigration reform has left the states feeling abandoned and wondering what to do. When the frustration boils over, as it has most scarily in Arizona, Republicans have been pushing what amounts to vigilantism — states taking on federal enforcement, shouldering aside civil rights and the Constitution and spending whatever it takes to get rid of illegal immigrants. It’s a seductively simple vision, and lawmakers across the country are grasping at it, pushing Arizona-style copycat laws.