The memo, written by John Yoo, then a key architect of legal policy in the wake of 9/11, dismisses several legal impediments to the use of extreme techniques.

Yoo was long a proponent of an aggressive approach in the war against terrorism and a believer in executive branch authority. But the memo was withdrawn as formal government policy less than a year after it was written.

In the March 14, 2003 memo, Yoo says the Constitution was not in play with regard to the interrogations because the Fifth Amendment (which provides for due process of law) and the Eighth Amendment (which prevents the government from employing cruel and usual punishment) does "not extend to alien enemy combatants held abroad.":

The memo goes on to explain that federal criminal statutes regarding assault and other crimes against the body don't apply to authorized military interrogations overseas and that statutes that do apply to the conduct of U.S. officials abroad pertaining to war crimes and torture establish a limited obligation on the part of interrogators to refrain from bodily harm.