referring to regarding jr spy ring.
http://www.fas.org/irp/agency/doj/fisa/Foreign Intelligence Surveillance Act
The Foreign Intelligence Surveillance Act 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.
Requests are adjudicated by a special eleven member court called the Foreign Intelligence Surveillance Court.
FISA Annual Reports to Congress
Foreign Intelligence Surveillance Court -- 2005 Membership
Intelligence Reform and Terrorism Prevention Act of 2004: “Lone Wolf” Amendment to the Foreign Intelligence Surveillance Act, December 29, 2004
The Foreign Intelligence Surveillance Act: An Overview of the Statutory Framework and Recent Judicial Decisions, Congressional Research Service, 2004.......more......