I-130

[dbt123]

I'm going to file I-130 for my sister. She's married and has a son. What proofs should I send to USCIS besides my sister's birth certificate? I believe they are her husband's marriage certificate and her son's birth certificate. Is that correct? Thanks so much for any helps.

[bobbyapra]

You have to prove your relation with your sister which can be your school certificate and your sister's school certificate with same mother/ father name.