Did you change your son's name because of adoption, court order, or any other reason?
Yes, I changed his last name.
Ok, great. In order to get a corrected card you need to tell Social Security.
My concern is that I haven't previously established his U.S. citizenship before. What documents do I need to do this?
We will need to see proof of U.S. citizenship.  Just so that you know, we can only accept certain documents.
Ok. I want to change his name on his Social Security card, do I need certain documents for that?
Yes, you will need to show us proof of his legal name change or final adoption decree.
Do they need to be original documents?
Yes, we can only accept certain documents as proof of U.S. citizenship.
What if my son works?