The B-2 visa is a document issued by a U.S. embassy or consulate abroad that allows foreigners to come to the U.S. for tourism or medical treatment. They can stay in the country only for the time specified in the visa and must show enough funds to support their trip expenses.
The amount of time it takes to process the visa depends on the country of application. For example, as of September, 2010, the Mexico City locations takes 23 days, Manila takes six days and Nairobi takes 30 days. Wait times for each embassy or consulate are detailed at the State Department website.
The visitor visa requires Form DS-160, Online Nonimmigrant Visa Electronic Application, one photograph measuring two-inches square, a passport valid for travel at least six months beyond the trip and the appropriate fees.
