Columbia subject headings:
Corporations--United States--Public opinion.
Labor unions--United States--Public opinion.
Politicians--United States--Public opinion.
Public opinion--United States.
Trade regulation--United States--Public opinion.
Harvard subject headings:
Corporations--United States--Public opinion.
Labor unions--United States--Public opinion.
Politicians--United States--Public opinion.
Public opinion--United States
Trade regulation--United States--Public opinion.
Princeton subject headings:
Corporations--United States--Public opinion.
Labor unions--United States--Public opinion.
Politicians--United States--Public opinion.
Public opinion--United States.
Trade regulation--United States--Public opinion.