回复:求教:485 Pending,邀请妈妈探亲,该准备哪些材料?

Would you please tell me a list of what the files I should
prepare, as detail as possible.

I plan to invite my mom and nephew to come visit us and
tour around US for about a month.

They've never been here before, so I want to prepare as much as possible.

thanks a lot, and happy new year.

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