BTW to fly INSIDE USA, you DONT need to have an ID.
If you do not have an ID , you will have to go through secondary screening at the airport EVERYWHERE. Maybe you may even need to be interviewed by FBI or someone.
This is a secret TSA doesnt want you to know.
There was a TV article here sometime back in which they profiled a person who does not want to show his ID at the airport - there are some people who are like that.
So the OP's brother can get to another island.
But I find it suspicious - other than birth cirtificate he has no other info on himself.
when you apply for job in this country, they have to note down your A#, if they do not, THEY will get into trouble when immigration folks do checks.
- So.. OP's brother should be able to get A# from his school, employment etc.
I also find it suspicious that his has no other papers - come on EVERYONE saves I-765s etc , if not the original, the copies.
The attorney should have those, so does USCIS.
My company's immigration deptt has all those.
I also have several copies of my GC and I have put them at different places in my home.
I have also save my previous expired DL - once when I had lost my DL, I had taken my cancelled(expired) DL to them and they immediately gave me a new one.