Columbia subject headings:
Civil rights--United States.
National security--United States.
September 11 Terrorist Attacks, 2001.
War on Terrorism, 2001-2009.
Harvard subject headings:
Civil rights--United States--History--21st century.
National security--United States--History--21st century
September 11 Terrorist Attacks, 2001.
United States. Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism (USA PATRIOT ACT) Act of 2001.
War on Terrorism, 2001-2009
Princeton subject headings:
Civil rights--United States.
National security--United States.
September 11 Terrorist Attacks, 2001.
War on Terrorism, 2001-2009.