回复：回复：回复：急...急..肯请牛人指点迷津！！！I－94卡

When you leave U.S. for canada or Mexico with a valid I-94, and come back within 30 days, you are not considered as leaving U.S. and re-entering U.S.for immigration point of view. So, you do not need to provide the i-94 when you leave, and you do not need to get a visa and a new I-94 when you come back.

所有跟帖： 

• I went Canada twice, and the white card was taken by immigration -doshexh- ♀ (25 bytes) () 06/30/2009 postreply 20:13:35

• BTW, do you have official documents about -doshexh- ♀ (172 bytes) () 06/30/2009 postreply 20:18:09

• 回复：BTW, do you have official documents about -863211- ♂ (826 bytes) () 06/30/2009 postreply 20:35:37

• 回复：thanks. -doshexh- ♀ (238 bytes) () 06/30/2009 postreply 20:43:05

• 回复：回复：thanks. -863211- ♂ (1498 bytes) () 06/30/2009 postreply 21:04:09