One helpful resource if you are planning a trip to climb outside of the US is the
U.S.Department of State, Travel.State.Gov website.
There is a lot of the latest info for Americans who travel outside the US.
"Climbing" mag did their own piece on travel abroad recently but the Gov website is right up to date!
see generally the US Dept of State website under the travel sections.
International Travel Home
Traveling to the Caribbean, Bermuda, Panama, Mexico, or Canada?
International Travel Information
Consular Information Sheets
Avian Flu Fact Sheet
Tips for Traveling Abroad
Registration with Embassies
Plan Your Trip
Emergencies and Crises
Family and Children's Issues
U.S. Embassies and Consulates