Entering the United States
A visa allows a foreign citizen to travel to a U.S. port-of-entry (generally an airport or land border) and request permission to enter the United States. A visa does not guarantee entry into the United States. The Department of Homeland Security (DHS), U.S. Customs and Border Protection (CBP) officials at the port of entry have authority to permit or deny admission to the United States. If you are allowed to enter the United States, the CBP official will provide an admission stamp or paper Form I-94, Arrival/Departure Record. Learn more on the CBP website.
Learn about admissions and entry requirements, as well as restrictions about bringing food, agricultural products, and other restricted/prohibited goods, by reviewing the CBP website under International Visitors and Clearing CBP.