If your child lived outside the United States for an extended period , a current or previous passport, school and/or employment records and any other record that would show long - term residence outside the United States are documents that we may need to see.
and I could use the report of birth right?
Yes, we can accept only certain documents as proof of U.S. citizenship. The Certification of Report of Birth DS-1350 is one of them
What other documents are accepted as proof of U.S. citizenship?