Parents bring niece here for summer vacation, how to apply?

来源: 于 2010-04-19 18:25:29 [旧帖] [给我悄悄话] 本文已被阅读：次

My parents will bring my sister's daughter (16-year-old) here for vacation.
Could they get B2 visa?
Any documents should they prepare especially for my niece?
Thanks for any answers.