Not only do they have to go back, but the President can utilize the Army, the Navy, the Air Force, and the Marines to make them go.
Supreme Court just handed Trump a massive win – 5-4 RULING UNLEASHES WARTIME POWERS FOR HUGE GANG DEPORTATIONS!
“In a stunning 5-4 ruling, the U.S Supreme Court has granted President Donald Trump broad wartime authority under the 1798 Alien Enemies Act” – breaking news dropping like thunder.
I don’t know why this would surprise anyone. There are about 90 million aliens now occupying United States territory and a significant percentage of them certainly aren’t very friendly.