okay, what if I don't have a certain document
If you don't have a foreign birth certificate then you can have their passport or a document issued by DHS as evidence of your child 's age .
what other documents can I use?
We can accept only certain documents as proof of U.S. citizenship . These include : Certification of Report of Birth DS-1350 ; Consular Report of Birth Abroad FS-240 ; U.S. passport ; Certificate of Citizenship N-560/N-561 ; Certificate of Naturalization N-550/N-570 .