I have a hard time gathering up any sympathy for this asshole. He reaps what he's sown, as far as I'm concerned.
I think in extreme situations like this, where a citizen has actually taken up arms against his/her country, they have lost any right to complain about lack of 'due process'.
That said, I don't know exactly what the command from the white house was. Was it just authorization of use of deadly force to capture him? If so, that's no different than what we do with any criminal. Or, was it just an outright mark for death with no intention of capture whatsoever?
It *should* have been the former and not the latter. But I wouldn't weep if they "had" to kill him in the process of trying to capture him.