请问：我是tn签证到美，如果想通过EB2申请绿卡，需要先换成HiB吗？

来源: 茉莉888 于 2010-11-24 15:47:05 [旧帖] [给我悄悄话] 本文已被阅读：次

申请时间大约会多长，谢谢

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