I don't understand how a question with an unsupported/uncited premise equivalent to "do you still beat your wife?" constitutes "an excellent question".
He's free to answer 0/"I have never beaten my wife". It's an excellent question because Obama has been responsible for the deaths of many people, some of whom were almost certainly killed illegally.
Your second statement begs the question: Pres. Obama would argue that none of those killed were due to an illegal direct order from him (and he may rationalize this with his own begging of the question).
Would it be a better question if it specifically mentioned that the killing of Osama bin Laden and the disposal of his body violated the Geneva Convention?
He literally has a button which kills people.
Any button kills people if you throw it hard enough.