Illegal immigrants appeared to have “ambushed” two U.S. Border Patrol agents near the Texas border with Mexico and bashed their heads with blunt objects -- possibly rocks -- killing one agent and sending another to a hospital in serious condition Sunday, a National Border Patrol Council (NBPC) official told Fox News. Rogelio Martinez, 36, was killed and another agent, who has not been identified, was injured while they were patrolling the Big Bend Sector, leading authorities to scour West Texas for the attackers, officials said. Although few details about the incident have been released, Brandon Judd, the president of the...