Yes,if you leave Canada go to another country,you

来源: 于 2006-08-31 19:48:08 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

should the newest I-94 to Canadian officer,but u
may keep the approval notice I-797 ( except attached I-94 ).
I think no problem this time, since US custom officer never found you ever left Canada,but you mayn't so luck
next time.