Another great dissertation by a group of legal scholars on the basis for impeachement can be found at ON NSA SPYING: A LETTER TO CONGRESS
, which says, in part:
Although the program's secrecy prevents us from being privy to all of its details, the Justice Department's defense of what it concedes was secret and warrantless electronic surveillance of persons within the United States fails to identify any plausible legal authority for such surveillance. Accordingly the program appears on its face to violate existing law.
All of the excuses presented by Bush's defenders (including § 1811. Authorization during time of war
) are addressed.