Columbia subject headings:
Civil rights--United States.
Electronic surveillance--Law and legislation--United States.
National security--Law and legislation--United States.
Terrorism--Prevention--Law and legislation--United States.
Textbooks.
War and emergency powers--United States.
Harvard subject headings:
Civil rights--United States
Electronic surveillance--Law and legislation--United States.
National security--Law and legislation--United States
Terrorism--Prevention--Law and legislation--United States
Textbooks
War and emergency powers--United States
Princeton subject headings:
Civil rights--United States.
Electronic surveillance--Law and legislation--United States.
National security--Law and legislation--United States.
Terrorism--Prevention--Law and legislation--United States.
War and emergency powers--United States.