OldGuy,
Its worse than that. You need to read my thread on this matter. Similar points are referenced in your link:
In an ironic turn, Obama, who ran for president denouncing predecessor George W. Bush's expansive use of executive power in his "war on terrorism," is being attacked in some quarters for using similar tactics. They include secret legal justifications and undisclosed intelligence assessments.
Awlaki's father went to court to have his son spared and they would not let him see the document that gives the President the legal authority to order someone's execution! They said it was classified. Not his son's reason for being on the KorC list, not the death panel committee names, not the list of crimes the guy may be guilty of, not any spies or source that may be compromised...
THE PRESIDENT'S LEGAL AUTHORITY FOR BEING ABLE TO ORDER THE ASSASSINATION OF A US CITIZEN. Nope can't see. Yes, we know its extremely pertinent to your case. So sorry.
Change you can believe in.