Some 4,000 international travelers have signed up for Global Entry, a Department of Homeland Security program designed to speed arrivals for frequent fliers entering the U.S. The program, which debuted in June, is now operating in seven airports, according to DHS. Participants undergo background checks and personal interviews in addition to submitting fingerprints. Once cleared for the Global Entry program, they can bypass immigration lines in favor of kiosks when arriving in the U.S.

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