I also have a question about original documents. Do I require them? What about IDs that have passed their expiration date?
The documents used as proof of identity must be current, not expired.
In my case, I lived in the USA for a long time now but it's my first time asking for a social security number.
for your case, you'll need to prove that you have never been assigned a social security number. You can do this by providing records about the schools you attended, tax records or something similar.