invite mother to US, what document need?

来源: bo2005jie 于 2007-06-09 15:21:08 [] [旧帖] [给我悄悄话] 阅读数 : (163 bytes)

I have green card, I want to invite my mother to US, should I ask international office (university)to give a letter, or need other form (such as 134 form)? Thanks

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