Most applicants who are age 1617 must apply in person using Form DS11. Passports for applicants 16 and older are valid for 10 years.Passports for all minors under 16 and those aged 16 or 17 who cannot have both legal guardians present. For detailed instructions on how to apply, please see Applicants Age 16 and 17. However, you will require proof of USA citizenship (e.g. A birth certificate) and photographic proof of identity, usually from a government. Fill out a Form DS-71 in the presence of a passport agent. For Minors Under the Age of 16. People over age 16 can get USA passports without their parent's approval. I've been meaning to fill out a passport application for my one-year-old since we received his birth certificate.