Executing him would be what he wants - martyrdom. Stick him in Super Max in CO - live in a cell 23.5 hours a day with no social contact other than his “spiritual leader” once a month. But then, if Obama pardon’s him the outrage that follows would be .....
“Stick him in Super Max in CO...”
24 hours a day, never out for ANY reason except to keep him from dying, so he can serve a longer life sentence. Other than that, no human contact of any kind. Ever! No spiritual leader. No koran. No directional arrows on the floor for locating Mecca. No halal food, just regular prison fare. No news from the outside for him and no news to the outside about him. He is a non-person and should cease to exist the day the door slams shut on him for the last time.
If you think he is a madman now, just wait awhile.