A federal judge who has blocked President Barack Obama's immigration executive action suggested on Thursday that he could order sanctions against the Justice Department if he rules it mislead him about when exactly the administration began implementing one of the measures. During a sometimes testy court hearing, U.S. District Judge Andrew Hanen went back and forth with the Justice Department over whether it had mislead him into believing that a key part of Obama's program would not be implemented before he made a ruling on a request for a preliminary injunction. In fact, federal officials had given more than 108,000...