Yes, you will need proof of citizenship.
Have you already established the child's citizenship with us?
No, not yet.
What if I am not a citizen?
We will need a current DHS document, like a Permanent Resident card.
What do you need for proof of my identity?
Your driver's license or state issued ID card are acceptable.
What DHS documents can I use ?
I-551 Permanent Resident Card
Can I use the same document for both parts?