sponsor documents

[noura3]

Hi Immi..i have one question,
my husband who is US citizen will sponsor my brother who is coming from Russia..According to this https://www.immihelp.com/usa-visitor...sor-documents/ my husband just have to send copy of his birthserticicate to prove identification, relationship and legal status..
-should i send my (original) birthsertificate as proof that i am sister ?
-any other documents from me ? (copies every page of my passport etc)?
-proof of my status in US etc?

thank you and sorry if question sound silly...

Noura

[immihelp]

1. Yes.
2 & 3. Just the proof of your legal status in the U.S.

[noura3]

Thank you...