The mechanism is called war powers. If a US citizen fights against the US or is a traitor then they can bull doze the for all I care. You forfeit your tights when you attack the country.
rights (and tights) LOL
You might have a point if he was being charged with treason and sedition, but he’s not. Under U.S. law, he’s treated just like any other mutant who plants bombs and shoots at the police.