Philip B. Heymann ( born October 30 , 1932 in Pittsburgh , Pennsylvania ) is an American lawyer , federal prosecutor , legal scholar and law professor who headed the Criminal Division of the Justice Department as Assistant Attorney General during the Carter administration and was briefly Deputy Attorney General in the Clinton administration before he resigned over management and policy differences as well as perceived interference by the White House . He has been involved internationally in supporting the rule of law in criminal justice systems . In domestic politics he has been a vocal supporter of civil and political liberties and , as such , has been actively critical of the George W. Bush administration , particularly its warrantless domestic spying program . Even before the September 11 attacks , Heymann has studied and published on how prosecution of antiterror policies can be done consistent with the rule of law in a democratic society . He is currently James Bar Ames Professor of Law , Emeritus at Harvard Law School , where he has taught ( with interruptions for government service ) since 1969
September 11 attacks
September 11 attacks
Philip Heymann