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期间因为我们搬了家，移民局的后来的文件也没收到。他们在美多呆了三个月，现在想再次来美，不知是否有影响？

-No. But they may need to provide the I-539 filing receipt notice (extention applicaiton receipt) for the visa application./

是否我们要和移民局联系得到当时延期批准的文件？

-Not need the approval notice, but need to provide the filing receipt (see above).

另，他们来准备短期停留，主要是参加孙子毕业典礼，当然也看看我们，是由他们孙子发邀请还是我们子女发邀请好呢？

-You are better because you have income to cover their costs.

多谢各位老师答疑解惑！

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• 大谢！非常感谢您的专业答疑！ -mama2011- ♀ (0 bytes) () 08/21/2016 postreply 19:04:21