visitor visa for nephew

[r_gopal]

I want to invite my nephew(12 yr old) here for his summer vacation. He will be travelling with my Mom who already had visa. I know that my sister will have to attend the interview. Is it better for her to sponsor or shall I sponsor? Are there any special documents required in this case?

Please guide.
Thanks

[immihelp]

If your sister can sponsor your nephew, that is good. Otherwise, you sponsor.