Columbia subject headings:
Civil rights--United States.
Electronic surveillance--United States.
Intelligence service--Law and legislation--United States.
Law enforcement--United States.
National security--Law and legislation--United States.
Terrorism--United States--Prevention.
United States. Foreign Intelligence Surveillance Act of 1978.
United States. Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism (USA PATRIOT ACT) Act of 2001.
Harvard subject headings:
Civil rights--United States
Law enforcement--United States
National security--Law and legislation--United States
Terrorism--United States--Prevention
Princeton subject headings:
Civil rights--United States.
Law enforcement--United States.
National security--Law and legislation--United States.
Terrorism--United States--Prevention.