Columbia subject headings:
Harvard subject headings:
Drug control--United States
Drug traffic--Western Hemisphere.
Political corruption--Western Hemisphere.
United States--Foreign relations--Western Hemisphere.
Western Hemisphere--Foreign relations--United States.
Princeton subject headings:
Drug control--United States.
Drug traffic--Western Hemisphere.
Political corruption--Western Hemisphere.
United States--Foreign relations--Western Hemisphere.
Western Hemisphere--Foreign relations--United States.