Foreign Intelligence Surveillance Act
The Foreign Intelligence Surveillance Act (FISA) of 1978 prescribes procedures for requesting judicial authorization for electronic surveillance and physical search of persons engaged in espionage or international terrorism against the United States on behalf of a foreign power. The newly created Patriot Act made significant changes to some of the provisions of FISA. Nine months after the September 11th terrorist attack, proposals to amend FISA were submitted. The amendments give law enforcement all the tools necessary to allow cross agency intelligence sharing, to prevent future terror attacks on America.