Passport Requirements for US Citizens
Before 2007, US citizens were able to take trips to Canada, Mexico, and many countries in the Caribbean without needing passports. Passport ID is now required to re-enter the US as part of a "Western Hemisphere Travel Initiative" for border security.
Crossing the Canada / U.S. Border with Children
Our About.com Guide for Canada Travel discusses what parents need to know about crossing the Canada/ U.S. border with kids.
Does my child need a passport to travel to Mexico?
About.com's Guide for Mexico Travel tells parents what documents they need to travel with kids to Mexico.