need advise for visitor visa

[preet1]

hi i am sponsoring for my masi, masr for them to get visitor visa to usa.they recently have gotten visitor visa to canada (multiple entry)and they will be coming there first.is there any chance for them to get visa.i have prepared all my documents acc to this site.also should they apply for single entry or multiple entry. also should i need to attach any of my mothers information with my papers or not.

[immihelp]

Well, all I can say is you can try.

yes, you should attach proof of your relationship. That would be who your mother is, and who your mother's sister is.

[preet1]

what kind of proof in need to attach from my moms side. we don't have a birth certificate or any paper that states they are sisiters.also her passport has my dads name on it not her fathers or mothers..please help.

[immihelp]

Well, you have to come up with some proof. Otherwise, how do they know they are sisters?