A: No. There are two immigration agencies that operate at airports. One is Customs and Border Protection, which places agents at all international airports. The other is the U.S. Border Patrol, which falls under the umbrella of CBP. Border Patrol agents work mostly in airports that are within 100 miles of the border. Customs agents use an electronic system to determine whether someone is legally allowed to travel into the United States, and they are the agents travelers typically see when they return from overseas trips.
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