Washington, D.C., December 19, 2005 -
In the wake of revelations that the Bush administration authorized
the warrantless surveillance of U.S. citizens in 2002, the National
Security Archive reposted its "National
Security Agency Declassified" electronic briefing book,
first published in January 2000 and updated as recently as this
President Bush's recent admission that he authorized the National
Security Agency (NSA) to eavesdrop on U.S. persons without obtaining
a warrant has focused the nation's attention on the authorities
and regulations governing this sensitive issue. The Foreign Intelligence
Surveillance Act (FISA) specifically prohibits domestic surveillance
by the NSA, the nation's largest intelligence agency, unless it
gets permission to do so from the Foreign Intelligence Surveillance
Specific guidance for adhering to FISA policies is spelled out
in United States Signals Intelligence
Directive 18, the most recent known version of which
was issued by the NSA director in July 1993. The directive "prescribes
policies and procedures and assigns responsibilities to ensure
that the missions and functions of the United States SIGINT System
(USSS) are conducted in a manner that safeguards the constitutional
rights of U.S. persons."
Also included in "The National Security Agency Declassified"
are warnings given by the NSA
to the incoming Bush administration in January 2001 that the Information
Age required rethinking the policies and authorities that kept
the NSA in compliance with the Constitution's 4th Amendment prohibition
on "unreasonable searches and seizures" without warrant
and "probable cause."
here for "The National Security Agency Declassified"