A USA visitor visa is for a foreign national who wishes to enter into the United states for the purpose of a temporary stay for either business or pleasure. If an individual wishes to enter into the United States for business, pleasure, or medical treatment, or a combination of them both, then they must seek and obtain a USA visitor visa to do so. These are temporary visas in nature and are often under strict stipulations as the concern is an individual overstaying their indicated amount of time. If an individual applies for a visitor visa, they must indicate the specified period of time for their visit up front and stick with it so as to avoid any problems later on.