Generally, a citizen of a foreign country who wishes to travel to the United States must first obtain a visa, either a nonimmigrant visa for a temporary stay, or an immigrant visa for permanent residence. Visitor visas are nonimmigrant visas for persons who want to enter the United States temporarily for business (B-1 visa), for tourism (B-2 visa), or for a combination of both purposes (B-1/B-2 visa).
Generally, a citizen of a foreign country who wishes to travel to the United States must first obtain a visa, either a nonimmigrant visa for a temporary stay, or an immigrant visa for permanent residence. Visitor visas are nonimmigrant visas for persons who want to enter the United States temporarily for business (B-1 visa), for tourism (B-2 visa), or for a combination of both purposes (B-1/B-2 visa).
These are some examples of activities that require different categories of visas and cannot be done while on a visitor visa:
Study
Employment
Paid performances, or any professional performance before a paying audience
Arrival as a crewmember on a ship or aircraft
Work as foreign press, in radio, film, print journalism, or other information media
Permanent residence in the United States
