Fine. Call him a criminal alien invader. The summon the sergeant at arms to arrest him and hold him for transfer to ICE.
Or, since he invaded our space, how about Space Invader?
Not human-sounding enough?
Then how about Criminal Trespasser ?
As a gringo, if I sat in front of a bunch of "officials" like this and admitted to any federal crime, how long would it take them to arrest and charge me ?
.