Unless there is something I am missing, this goes against everything President Obama stands for. A former Constitutional professor, he has to know in his heart of hearts that this is beyond unlawful. And it's enough for me, a staunch Obama defender (even when I disagree with him), to contemplate withdrawing support.
Make no mistake: If the President goes down this path then he is no better than the Bush team on matters of terrorism; and if this shit continues, if the administration really is ordering the killing of American citizens, then I might have serious reservations about an Obama vote in 2012. Unlike health care or budgetary matters, this is not an issue you can on which you can compromise, and the President knows it. I don't care what his national security team is telling him, I don't care what intelligence he is seeing as president that he didn't see as a candidate...this flies in the face of our Constitution. And if THIS president sees fit to soil that document as the Bush team did, then America as we know it is truly done.