Or maybe this one
Revisiting Echelon: The NSA’s Clandestine Data Mining Program
"Report Critical of NSA Program
"Last week, an unclassified report prepared by inspectors general of five federal agencies said George W. Bush justified his warrantless wiretapping by relying on Justice Department attorney John Yoo’s theories of unlimited presidential wartime powers, and started the spying operation even before Yoo issued a formal opinion, a government investigation discovered.
Essentially, President Bush took it upon himself to ignore the clear requirement of the 1978 Foreign Intelligence Surveillance Act that all domestic intelligence-related electronic spying must have a warrant from a secret federal court, not just presidential approval. Illegal wiretapping is a felony under federal law."
http://pubrecord.org/nation/2290/rev...-echelon-nsas/