Columbia subject headings:
Harvard subject headings:
September 11 Terrorist Attacks, 2001--Congresses.
Terrorism--Religious aspects--Islam--Congresses.
United States--Foreign relations--21st century--Congresses.
United States--Politics and government--21st century--Congresses.
War on Terrorism, 2001-2009--Congresses.
Princeton subject headings:
September 11 Terrorist Attacks, 2001--Congresses.
Terrorism--Religious aspects--Islam--Congresses.
United States--Foreign relations--21st century--Congresses.
United States--Politics and government--21st century--Congresses.
War on Terrorism, 2001-2009--Congresses.