Columbia subject headings:
Social sciences and ethics--Congresses.
Social sciences--Research--Law and legislation--United States--Congresses.
Social sciences--Research--United States--Congresses.
Harvard subject headings:
Social sciences and ethics--Congresses.
Social sciences--Research--Law and legislation--United States--Congresses.
Social sciences--Research--United States--Congresses.
Princeton subject headings:
Social sciences and ethics--Congresses.
Social sciences--Research--Law and legislation--United States--Congresses.
Social sciences--Research--United States--Congresses.