This is a good debate and important discussion.
An opinion from the right:
From the piece:
They rarely say what their alternative would be. Does a U.S. citizen get an exemption from targeting if he joins Al Qaeda at a high level? Should his status be litigated before he can be targeted, and if so, by whom and for how long and on the basis of what evidence? Can he show up in the court room to confront his accusers, a basic element of the Anglo-American system? Should al-Awlaki have gotten a court-appointed lawyer (assuming Gloria Allred wasn’t available) and access to all the intelligence about him so he could properly contest it? Maybe over Skype from somewhere in the badlands of Yemen?
It is self-evidently absurd. Civil libertarians lament that the argument of the white paper parallels the reasoning of the Bush administration. No kidding.