question for I-94, need answer

来源: 于 2004-07-20 14:22:09 [旧帖] [给我悄悄话] 本文已被阅读：次
I'm still holding H1-b, my advanced parole has not been approved yet, but I need to fly to Canada for 2 days, do I need to surrender my I-94 at the airport? Thanks