Be prepared no to be allowed to return to US.

Usually, the B2 visa is multiple entry visa for half year.

And the I-94 is also for 6 months. Please check the validation date of the visa. If it is expired, your parents need a new visa to reenter US from Canada.

I doubt it will work to get around the renewal application. So many people who have failed on extanded application never think about and try that way.

If you never heard any successful example, I suggest you not try to be the first one. It is too risky and it could become a big hassle to you and your parents.

所有跟帖： 

• 可以的,我公婆就是这样得到另外六个月的,当然你的签证还要在有效期内,不过你有可能会在回美时被要求出示回程(中国)机票 -小雪球- ♀ (0 bytes) () 11/03/2008 postreply 08:52:52