Traveling by Air
Passengers of all ages traveling by air are required to have a valid passport. The passport must be a passport book, and passport cards will not be accepted.
Traveling by Land and Sea
Adult travelers traveling between the United States and Canada by land and sea are required to present a passport book, passport card or other Western Hemisphere Travel Initiative compliant document.
Children traveling by land and sea may submit a valid birth certificate as a proof of identification and citizenship. However, when traveling by air, a valid passport is required.
Western Hemisphere Travel Initiative
The Western Hemisphere Travel Initiative (WHTI) is the law set forth as an antiterrorism act. The WHTI helps the United States, Canada and Mexico keep track of who is entering and exiting borders.
WHTI Approved Documents
WHTI compliant documents (that are used for land and sea travel) include enhanced driver's licenses, NEXUS, SENTRI or FAST cards, and approved military, merchant mariners and Native American Cards.
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Bridget Everett is a professional Web copywriter. She specializes in several niches including travel, education, parenting, business, marketing, health, crafts, fashion and home decorating. Everett has studied marketing, elementary education and journalism at Northeastern University, Fordham University and Middle Tennessee State University.