Use our Child Travel Consent form to prove that a child can travel without their parents or guardians. This guide includes forms and instructions for a letter and affidavit to request that the court register an out-of-state custody order in Texas.You'll need to fill out an unaccompanied minor form and any necessary Customs and Immigration documents for the day of departure. A parent can sign an "authorization agreement" form to give a nonparent the authority to care for and make decisions for a child. 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. The intention of this letter is to provide consent for a minor child to travel without the company of both legal parents. TSA officers will consult parents or the traveling guardian about the child's screening. The travel documentation pouch is to remain with the UMNR and be visible at all times. The wizard is not an online application, and completing the wizard does not mean you will receive a passport.