The White House announced last Thursday that children aged 15 and under will be able to cross U.S. borders at land and sea entry points with certified copies of their birth certificates in lieu of passports.
The change will go into effect in January 2008. (Passports will still be necessary for children traveling by air.)
The change is the latest update to the requirement that U.S. citizens traveling by air to Canada, Mexico, Bermuda, or the Caribbean must show a passport, effective January 23, 2007.
For more information on passport rules and for Caribbean deals, read Caribbean Travel Incentives.