A dizzying volley of courtroom maneuvers over a Texas law that would allow the state to arrest and deport people who enter the U.S. illegally sowed confusion at the nation’s border with Mexico on Wednesday as sheriffs‚ police chiefs and migrants waited for direction. Texas faced skeptical questioning during a hearing before a three-judge panel of the 5th U.S. Circuit Court of Appeals that ended without a ruling‚ leaving Texas’ new law on hold for now. It was part of a flurry of activity that...