Columbia subject headings:
Harvard subject headings:
Conservatism--United States
Presidents--United States--Election--2016.
Right and left (Political science)--United States.
United Airlines Flight 93 Hijacking Incident, 2001
United States--Politics and government--21st century.
Princeton subject headings:
Conservatism--United States.
Presidents--United States--Election--2016.
Right and left (Political science)--United States.
United Airlines Flight 93 Hijacking Incident, 2001.
United States--Politics and government--21st century.