Site: nolo.com
... However, the appropriate documentary proof of their status depends in some cases on how citizenship was ... (Birth certificates issued by hospitals are not official records, however, and do not serve as proof ... , you can apply for a passport at a passport acceptance facility or apply for a certificate of citizenship ... Certificates of Citizenship as Proof
Another way to proof of U.S. citizenship is by applying for a certificate ... Anyone with a claim to U.S. citizenship can apply for a certificate of citizenship, using Form N-600. ... Citizenship ...