Columbia subject headings:
Separation of powers--United States--History.
United States--Foreign relations--Law and legislation--History.
War and emergency powers--United States--History.
Harvard subject headings:
Separation of powers--United States--History
United States--Foreign relations--Law and legislation.
War and emergency powers--United States--History
Princeton subject headings:
Separation of powers--United States--History.
United States--Foreign relations--Law and legislation--History.
War and emergency powers--United States--History.