Columbia subject headings:
Policy sciences--Congresses.
United States--Foreign economic relations--Congresses.
United States--Foreign relations--Congresses.
Harvard subject headings:
Policy sciences--Congresses.
United States--Foreign economic relations--Congresses.
United States--Foreign relations--Congresses.
Princeton subject headings:
Policy sciences--Congresses.
United States--Foreign economic relations--Congresses.
United States--Foreign relations--Congresses.