Please help with family base green card application


Registered Users (C)
Dear Friends,
I have a friend who filed I130 back in Sept. 1993 based on his father. He is in USA with H1_b visa now. He is ready filing I485. He have follow questions before he do so. If you know the answers, please help him out.

1) His father is taking SSI and free medcare benefit now. If he can ask
   his sister (US citizen) as his sponsor? If his father need to return
   all the money back to SSA?

2) Is he legal to file I485 because he is with H_1b now?

Thank you very much for your help