Columbia subject headings:
Film genres--Congresses.
Motion pictures--United States--History--21st century--Congresses.
Motion pictures--United States--Plots, themes, etc.--Congresses.
Harvard subject headings:
Film genres--Congresses.
Motion pictures--United States--History--20th century--Congresses.
Motion pictures--United States--History--21st century--Congresses.
Motion pictures--United States--Plots, themes, etc.--Congresses.
Princeton subject headings:
Film genres--Congresses.
Motion pictures--United States--History--21st century--Congresses.
Motion pictures--United States--Plots, themes, etc.--Congresses.