I want to make sure I understand the reasoning:
The President is Commander in Chief of the Armed Forces.
The CinC "command who is a target and who is not." during a time of war.
Therefore, the President can order the death of any American, anywhere, for any reason, through extra-judicial measures, if he considers us in a state of war?
And what keeps the President for designating you as a target, Big Dog? Your citizenship? Not if the President can strip it at a whim. Your patriotism? Not if he deems it misdirected. Your mighty fist? Not unless you are bomb proof and can punch out a drone flying at 12,000 ft.
When you undertake to deny the rights of any American citizen, in time, you udermine the rights of all.