When you apply for your first U.S. passport, you need to submit these documents required by the Department of State: your completed DS-11 passport application form, a qualifying ID with a matching photocopy, a qualifying document that proves your U.S. citizenship with a matching photocopy, and a qualifying photograph of yourself. All new passports and all passports for children under 16 must be applied for in person at a passport acceptance facility, or, in some cases, a passport agency.