What do customs officers check?

CBP officers must determine the nationality of each applicant for admission and, if determined to be an alien, whether or not the applicant meets the requirements of the Immigration and Nationality Act for admission to the United States.



Customs officers at international airports in 2026 primarily check for prohibited, restricted, and dutiable goods to ensure compliance with national safety and economic laws. Prohibited items include narcotics, counterfeit currency, weapons, and "objectionable" materials. Restricted items often include agricultural products like fresh fruits, meats, and soil, which can carry pests or diseases that threaten local ecosystems. Dutiable goods are items that exceed a country's "duty-free" allowance—such as large quantities of alcohol, tobacco, or expensive luxury electronics and jewelry—which require the payment of import taxes. Officers also monitor for large amounts of undeclared cash (typically over $10,000 USD). In 2026, many customs processes have become "frictionless," with officers using AI-powered X-ray scanners and automated digital declaration apps (like "Visit Japan" or "MPC" in the US) to screen passengers before they even reach a physical podium. If you are "red-lighted" for secondary screening, expect a thorough search of your luggage and questions about your travel purpose and financial readiness for the trip.

People Also Ask

What Information Do Immigration Officers in the U.S. Have?
  • Name.
  • Country of citizenship.
  • Home address.
  • Date of birth.
  • Method of travel.
  • Purpose of travel.


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Pursuant to this authority, customs officers may generally stop and search the property of any traveler entering the United States at random, or even based largely on ethnic profiles.

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They don't put their entire trust in people's good character, of course; customs performs a thorough search of some percentage of all travelers. Some customs agencies decide which travellers to search based on random chance. You are asked to press a button on a machine that activates a random number generator.

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As for the border patrol, the agency believes searches of social media and travelers' devices are well within its rights. The reason lies with the so-called “border exemption”—a legal rule that puts border searches outside the Fourth Amendment, which requires a warrant for search and seizures.

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U.S. Customs and Border Protection (CBP) is taking your photograph in order to verify that each person presenting a travel document for entry into the U.S. is the true bearer of that document.

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If a violation does occur, U.S. Customs will seize the merchandise and transport it from the Centralized Examination Station to an official property warehouse. The merchan- dise will remain in the warehouse until Customs authorizes its release.

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The TSA largely looks for physical evidence that a passenger could be a threat, so they'll generally have no reason to search through the data on your phone. After all, they're the Transportation Security Agency, not a detective agency. Even if they did have reason to want to access your phone, they'd need a warrant.

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Yes. Contrary to opinions expressed here customs can, if they wish, search checked luggage in front of the passenger.

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Mailing and Shipping Goods - Customs Duty Guidance Up to $1,600 in goods will be duty-free under your personal exemption if the merchandise is from an IP. Up to $800 in goods will be duty-free if it is from a CBI or Andean country. Any additional amount, up to $1,000, in goods will be dutiable at a flat rate (3%).

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You must declare all items you purchased and are carrying with you upon return to the United States, including gifts for other people as well as items you bought for yourself. This includes duty-free items purchased in foreign countries, as well as any merchandise you intend to sell or use in your business.

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