Passport Requirements at the U.S. Border
Requirements for international travel into the United States changed on June 1, 2009. Before then, a passport was not always necessary for entry or re-entry.
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Air Travel
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American citizens must have a passport or military identification card upon entry into the United States by air.
Land or Sea
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American citizens are required to have a passport or one of the documents listed on the Western Hemisphere Travel Initiative list to enter by land or sea.
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Lawful Residents of United States
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Lawful residents that are not citizens of the United States are required to have a passport if they enter the country by air. If they enter by land or sea, a permanent resident card may be used.
Visiting From Another Nation
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Regardless of your country of origin, you must supply a passport to enter the United States by air. Land and sea requirements can differ depending on country of origin and other factors. The Department of Homeland Security provides a list of acceptable travel documents (see Resources).
Steps to Follow
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Due to heightened security, travel regulations into the United States rapidly change. Check your specific travel requirements based on how you plan to travel and where you are coming from.
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