Not need.

我们过去需要带些什么必要的文件资料么?
-Passport and I-94 (print it out at the website).

打印出来往返机票会不会有很大的帮助?
-Not hurt to bring it. If it does not work, just file I-539.

父母去年五月份来过美国,呆了一个月就回去了。此次入境是第一次使用这个签证(2014年8月底的issue date)。刚才用您给的网站也查了他们的I-94,的确是一个月的有效停留期10/06至11/04。
-When does their passport expire? If their passport will expire in about 7 months, then you can not do anything because it is required that the passport has to have at least 6 months of validity before they leave US, so the IO at the port of entry only can give them one month to stay in US.

 感谢老师的耐心答复,没有遇到过这种情况,一时都有点不知道怎么办了

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昨天改延期成功 -buhua- 给 buhua 发送悄悄话 (232 bytes) () 10/10/2014 postreply 12:08:54

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