A citizen of a foreign country who seeks to enter the United States generally must first obtain a U.S. visa, which is placed in the traveler’s passport, a travel document issued by the traveler’s country of citizenship. Travelers from certain countries may be exempt from this requirement.
Advance planning on the part of travelers is essential to receive a visa in time for proposed travel dates to the United States. Visa applications for the USA are subject to a great degree of scrutiny. The timeframes for visa processing today are difficult to predict with accuracy for any individual applicant and could vary significantly by country and visa applicant.