Ceuta in Spain was just a trial to see how fired up would be the public reaction. They managed to organize 60,000 young men to crush the border in Spain.
While trump is not in great terms with Mexico gov, he’s certainly in good terms with other fascists in South America. If he pull out something like this on the US land border 2x 3x times bigger would be enough for him to declare national security emergency.
Just argue that RoBlox is a platform that makes kids trans and Gay and Roblox would be down in a week.