The visitors visa is type of non-immigrant visa for a person from another country who wishes to visit the US temporarily based on the purpose of the trip such as Tourism,Business or Medical treatment visa, which is generally known as B1/B2 visa. International travelers with visitor visas consist a large portion of temporary visitor travel to US every year. For how-to-apply information , documentation requirements and more , see these webpages:
Students, temporary workers, journalists and persons planning to travel to the U.S. for a purpose other than that permitted on a visitor visa, must apply for a different visa in the appropriate category.
Travel Without a Visa - Foreign citizens traveling for visitor visa purposes only, from certain eligible countries may also be able to visit the U.S. without a visa, through the Visa Waiver Program if they meet requirements, including having a valid Electronic System for Travel Authorization (ESTA) approval. Additionally, citizens of Canada and Bermuda traveling for visitor visa purposes don’t need a visa, with some exceptions.
For more information regarding travel and tourism in the United States please visit DiscoverAmerica.org, the official travel and tourism website of the United States.
Review the Internal Revenue Service website information about United States tax requirements for certain foreign citizens engaged in business or trade in the U.S., since many will have an obligation to file a U.S. tax return.