This category of multiple entry visa is granted for the purpose of transit within the USA. A citizen of a foreign country traveling in immediate and continuous transit through the United States enroute to a foreign destination requires a valid transit visa. If the traveler seeks layover privileges for purposes other than for transit through the United States, such as to visit friends or for sightseeing, the applicant will have to qualify for and obtain the type of visa required for that purpose, such as a B-2 visa.