I have a question regarding my name change. In N-400, you have an option to change your name so I did. Now I got the interview call and they are asking if my name is different then it was on green card, I need a legal document showing my name was changed. My question is, since I changed my name on N-400, do I need a legal proof? If I do, where n how can I get it? Also, I just switch my first name to middle n middle to first becaue in Asian countries the middle name is your real name.