Passport Information
Q: How long is a passport valid and when should I renew my passport?
A: If you were over age 16 when your passport was issued, your passport is valid for 10 years.
If you were age 15 or younger when your passport was issued, your passport is valid for 5 years.
The Issue Date of your passport can be found on the data page of your Passport Book.
If possible, you should renew your passport approximately nine (9) months before it expires. Some countries require that your passport be valid at least six (6) months beyond the dates of your trip. Some airlines will not allow you to board if this requirement is not met.
Passports BOOKS are required for international air travel.
http://travel.state.gov/content/passports/english.html
A valid passport book is required to travel outside the country! If you do not have one, look into getting one ASAP. Although you can obtain a passport somewhat quickly if you need to, there are fees associated with expedited service. Please visit the following site to the nearest location to apply for a passport near you.
Entry / Exit Requirements
Please review the U.S. Passport information for travel to Mexico Here