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请教各问题,我和先生孩子在美国已拿到绿卡,我的父母和姐姐姐夫外甥女,打算来美国旅游,他们应该办旅游还是探亲,
-You and your spouse write a letter to invite them to visit you and tour. They apply for B-2 visa.
我这边要准备些啥材料,我没有工作,先生有工作。谢谢!
-Read these link:
http://www.ustraveldocs.com/cn_zh/cn-niv-passporttrack.asp (Click the icons on the left to find details on this link webpage).
http://www.ustraveldocs.com/cn_zh/cn-niv-typeb1b2.asp
