McALLEN, Texas — Plans by Texas to arrest migrants suspected of entering the U.S. illegally were again on hold Wednesday after setting off uncertainty along the border and anger from Mexico flared during a brief few hours that the law was allowed to take effect.A late-night order Tuesday from a 5th U.S. Circuit Court of Appeals panel put on hold — again — Texas’ dramatic state expansion into border enforcement. Earlier in the day, the U.S. Supreme Court had cleared the way for the strict immigration …