Presidential candidate Donald J. Trump: "On my first day back in the White House I will . . . invoke the Alien Enemies Act to remove all known or suspected gang members, drug dealers or cartel members from the United States, ending the scourge of illegal alien gang violence once and for all"
The question is just how the Alien Enemies Act could be used to deport aliens who are suspected (by whom, on what standard?) to be gang or cartel members or drug dealers.
