A man is halted climbing the US-Mexico border wall. Under new Trump rules, US troops sound the alarm

U.S. troops are sharing command stations and vehicles with civilian immigration authorities at the southern U.S. border under an emergency declaration from President Donald Trump. A two-star general general leads 7,600 border troops and an assortment of helicopters and drones, and says the military has been freed from menial work to help apprehend immigrants, protect newly designated militarized turf and disrupt smuggling cartels. Legal experts say the strategy flouts a ban on law enforcement by the military on U.S. soil and thrusts the armed forces into a potentially politicized mission. In a twist of fate, immigrants are part of the U.S. fighting forces at the border.