"Border czar" Tom Homan said he expects to use the U.S. military if Mexican cartels target American troops on the border.

"The cartels have increased and actually escalated their threats and are actually using drones to drop explosives on rival cartel members or even the military."

Mexican drug cartels have planned attacks on U.S. Border Patrol agents with kamikaze drones and other explosives to combat a crackdown by the Trump administration at the southern border.