回复:老人探亲延期问题

1、延期用什么理由好?
- http://blog.wenxuecity.com/blogview.php?date=200709&postID=147#B

2、成功率高吗?
3、需要提前多久寄出申请?
- Make sure I-539 is received prior to I-94 expiration

4、谢谢

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