For traveling to the United States, a visa is required for tourism, visits, business, employment, study and exchange, and immigration. A foreign national traveling to the United States for tourism (a short visit for vacation, for visiting family and friends, or for medical treatment) needs a visitor visa (B-2) unless qualifying for entry under the Visa Waiver Program. To work in the United States temporarily as a lawful nonimmigrant, temporary workers must qualify for the available visa category based on the planned employment purpose. The steps in the process before applying for a visa vary. The United States supports international education and welcomes foreign students and exchange visitors. Before applying for a visa, students and exchange visitors must be accepted by their schools or program sponsors. Details on the types of Visas and application procedures are on the website.