Does US customs know when you leave the country?

It's important to remember to hand in your paper I-94 when leaving the United States, since that's how the U.S. government will track your departure and know that you left the country before your visa expired. You'll use information from your I-94 travel record for many immigration purposes.



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CBP has established an easy to use traveler compliance check that is available on the I-94 website. Travelers may check their admission status at https://I94.cbp.dhs.gov and clicking on the 'View Compliance' tab. E-mail notifications will come from [email protected].

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Travelers should declare all items being brought from abroad that will remain in the United States. This includes gifts and duty-free purchases. Goods purchased in a duty-free shop are not automatically free of duty upon your return to the United States.

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Most countries require travellers to complete a customs declaration form when bringing notified goods (alcoholic drinks, tobacco products, animals, fresh food, plant material, seeds, soils, meats, and animal products) across international borders.

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In the air passenger environment, air carriers transmit passenger information to CBP through the Advance Passenger Information System (APIS). CBP officers also rely on the Interagency Border Inspection System (IBIS) to determine which individuals to target for secondary examination upon arrival in the United States.

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