Regarding drones killing Americans, I agree with Dr. Sowell if the argument is being made that these Americans are enemy combatants. That is the argument that Bush made. But Obama is not making that argument. He is taking the police officer vs criminal approach, where an officer can use deadly force when the suspect is an imminent threat to the life of another and other means of apprehension have failed or are impossible. That is a dangerous use of police authority when the people being killed aren't really an immediate threat.