We need proof of immigration status
Do you have documents that proof their immigration status?
yes, just need to know which documents you will take as proof
To prove their U.S. immigration status , we need to see a current U.S. immigration document , such as a I-551 Lawful Permanent Resident Card , Machine Readable Immigrant Visa ; or a I-766 Employment Authorization Document , EAD , work permit
Alright, and what if I am unable to come up with some of the documents I need, like ID stuff?
If you can't come up with the usual proofs of identity then we may accept other items, like an adoption decree or a doctor, clinic or hospital record.
What if they are not American?
If they are not an American citizen Social Security will ask to see a current DHS document . Such as a I-551 Permanent Resident Card
Do I need to take my kid down their when I go or just the documents?
If they are age 12 or older and requesting an original Social Security number then they  must appear in person for an interview. We will ask for evidence to show that your child does not have a Social Security number .
Okay, and this will also help me with getting their taxpayer ID number?
If you need a number for your child for tax purposes and your child is not authorized to work in the United States ,you can apply for an Individual Taxpayer Identification Number for your child from the Internal Revenue Service IRS .Visit IRS in person or call the IRS toll - free number , 1 -800-TAXFORM , 1 - 800 - 829 - 3676 , and request Form W-7A Application for Taxpayer Identification Number for Pending U.S. Adoptions .
OK, and one more question about immigration status. that is a must have?