Washington Post 
Oct 1, 2011
The Justice Department wrote a secret memorandum authorizing the lethal targeting of Anwar al-Aulaqi, the American-born radical cleric who was killed by a U.S. drone strike Friday, according to administration officials.
The document was produced following a review of the legal issues raised by striking a U.S. citizen and involved senior lawyers from across the administration. There was no dissent about the legality of killing Aulaqi, the officials said.
“What constitutes due process in this case is a due process in war,” said one of the officials, who spoke on the condition of anonymity to discuss closely held deliberations within the administration.
The administration has faced a legal challenge and public criticism for targeting Aulaqi, who was born in New Mexico, because of constitutional protections afforded U.S. citizens. The memorandum may represent an attempt to resolve, at least internally, a legal debate over whether a president can order the killing of U.S. citizens overseas as a counterterrorism measure.