A B visa is one of a category of visas issued by the U.S. government to foreign nationals seeking entry for a temporary period. The two types of B visas are the “B-1 visa,” given to those seeking admission for business purposes, and the “B-2 visa,” issued to those seeking entry for tourism or other non-business purposes. In practice, the two visa categories are often combined and given as a “B1/B2 visa,” valid for a temporary visit for either business or pleasure or a combination. The validity periods for visitor visas vary by country.