A judge cleared the way Thursday for thousands of young immigrants in Arizona who are protected from deportation under an Obama administration policy to get driver’s licenses. The preliminary injunction issued by U.S. District Judge David Campbell bars the state from enforcing Gov. Jan Brewer’s policy of denying the licenses to about 20,000 immigrants. The injunction that takes effect on Monday was a formality that carries out instructions issued in July by the 9th U.S. Circuit Court of Appeals. …