Entering the United States
A visa allows a foreign citizen to travel to a U.S. port of entry (generally an airport) 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 admissions stamp or paper Form I-94, Arrival-Departure Record. Learn more on the CBP website.
Learn about admissions, 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.
A-1, A-2, G-1 through G-4, as well as NATO-1 through NATO-6 visa holders are exempt from the Department of Homeland Security’s biometric program at U.S. ports of entry (formerly called the US-VISIT program).
Port of Entry Restrictions - If your visa contains an annotation that you may only enter the United States at certain ports of entry, it is important that you only use those ports of entry for both arrival and departure.