A passport is not only your child’s ticket to world travel, but also serves as a primary form of photo identification for the rest of his/her life.
Applying and renewing your children’s passports is simple but there are some things you need to be aware of before you begin the process.
For more information please visit this link https://travel.state.gov/content/passports/en/passports.html
Renew Your U.S. Passport
Renew a Passport Book by Mail