Travelers departing from or arriving at the United States should consult the U.S. State Department's U.S. Travel web site at http://travel.state.gov/ for current information about U.S. and world travel requirements and recommended precautions. In addition, the U.S. Transportation Security Agency has devoted a portion of their web site to U.S. travelers: http://www.tsa.gov/travelers/index.shtm. This site is particularly helpful for those traveling by commercial airline, as it tracks the various travel security measures that will be imposed on air travelers.
Changes over time to these travel advisories, and comparisons of different governmental advice may be viewed at:
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