You must be physically present in the United States when you file the Reentry Permit application and complete the biometrics services requirement. See what documents a child needs to travel to or from the US alone or with a parent or relative.Non-US citizen children traveling to the US. All parents or legal guardians must consent for their child to get a passport. Parents must submit a birth certificate or legal documents showing guardianship. Any template for the consent form? I can then print it out and have my wife sign and notorize it. A travel consent form letter is required for each traveling child. Use our Form Filler to fill out your form and print it. Importantly, it must also contain the signatures of all legal guardians, affirming their consent for the child to travel.