first, you need to prove your child's citizenship.
Do you have your child's foreign birth certificate?. If not, there are other options.
I don't have the certificate, please tell me about the other options.
You could use your child's passport or a document given by the DHS as evidence of your child's age.
and for me, what documents can I use as proof of identity?
You could use a state-issued non-driver ID card or a U.S. driver's license.
isn't my passport enough to prove my citizenship and my identity?
Yes, we actually can use one document for two purposes like in the passport case to prove both your identity and citizenship, but you need to provide at least two separate documents.
now, my kid has lived in the US for quite some time now. Is there anything else that I need to do?
You have to provide records of your child's school activities or tax records that show that your child was never assigned a social security number.
and, apart from the passport, what other documents can be used as my child's proof of identity?
you can use the adoption decree or a state-issued non-driver's ID card, among other accepted documents.
Does the kid have to be present during the interview?