回复：谢谢回答, 真的不用吗?

My parents came once, my mother-in-law came twice. My father-in-law came once. I haven't done this for any of their visa application.

This is what I read from the embassy's website about B2 visa:
http://www.usembassy-china.org.cn/visa/b1b2.html

Applicants for B-2 visas may wish to bring to their interviews letters of invitation from friends or relatives in the United States, information confirming participation in a tour group or conference, and documentation demonstrating the applicants ability and intention, or that of friends or relatives in the United States, to support his or her travel and other expenses. Documentation establishing the applicants personal status, such as marriage certificates, letters confirming employment, bank statements, pay slips, etc. is also useful.

所有跟帖： 

• 再次谢谢, 邀请信有期限吗? -括苍浪人- ♀ (0 bytes) () 07/24/2004 postreply 07:42:45