When do I need
A passport book is required for all international travel by air. To enter the United States at land border crossings or sea ports of entry from Canada, Mexico, the Caribbean, and Bermuda, you can use a passport book or a passport card.
Do kids need a
U.S. law requires that all parents listed on the birth certificate or all legal guardians provide consent authorizing passport issuance for minors ages 15 and under. For applicants ages 16-17, those with their own valid government ID can apply for a passport by themselves.