Congress is poised to affirm that President Obama and his successors can imprison whomever they want, for as long as they want, on no authority but their own, so long as they first assert that the person in question is a terrorist. They needn’t present evidence, or persuade a judge, or get a majority of votes from a jury. Just whispering “he’s a terrorist” is enough. Yes, even if the suspect is an American citizen.