Columbia subject headings:
Admission of nonimmigrants--United States.
Noncitizens--United States.
Students, Foreign--Legal status, laws, etc.--United States.
Visas--United States.
Harvard subject headings:
Admission of nonimmigrants--United States.
Noncitizens--United States
Students, Foreign--Legal status, laws, etc.--United States.
Visas--United States.
Princeton subject headings:
Admission of nonimmigrants--United States.
Noncitizens--United States.
Students, Foreign--Legal status, laws, etc.--United States.
Visas--United States.