Col. Ali Hussein, right, listens to an Iraqi informant, center, giving information about Islamic State militant positions on a mobile map, in the Bakr front line nei… Watchdog groups that keep tabs on digital privacy are concerned about reports that U.S. Customs and Border Patrol agents are searching the electronic devices of travelers arriving in U.S. airports. Watchdog groups that keep tabs on digital privacy are concerned about reports that U.S. Customs and Border Patrol agents are searching the electronic devices of travelers arriving in U.S. airports.