Columbia subject headings:
Campaign funds--Law and legislation--United States.
Corporations--Political activity--Law and legislation--United States.
Political action committees--Law and legislation--United States.
Harvard subject headings:
Campaign funds--Law and legislation--United States
Corporations--Political activity--Law and legislation--United States
Political action committees--Law and legislation--United States.
Princeton subject headings:
Campaign funds--Law and legislation--United States.
Corporations--Political activity--Law and legislation--United States.
Political action committees--Law and legislation--United States.