Columbia subject headings:
Anti-Americanism--Economic aspects--United States.
Tourism--Economic aspects--United States.
Visas--Government policy--United States.
Harvard subject headings:
Anti-Americanism--Economic aspects--United States.
Tourism--United States
Visas--Government policy--United States.
Princeton subject headings:
Anti-Americanism--Economic aspects--United States.
Tourism--Economic aspects--United States.
Visas--Government policy--United States.