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&lt;strong&gt;As early as January 1, 2008, ALL persons, including U.S. citizens, traveling between the U.S. and Canada, Mexico, Central and South America, the Caribbean, and Bermuda by land or sea (including ferries), may be required to present a valid passport or other documents as determined by the Department of Homeland Security&quot; This clarifies it&#33;<br />
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They arent but its a good Idea to have them&#33;  <img src='http://www.cruisecrazies.com/community/images/forum/tr-emoticons/wink.gif' class='bbc_emoticon' alt=':wink2:' /> &lt;/strong&gt;&lt;]