Question: where to I-94 if leave USA?

來源: 於 2006-11-29 19:07:33 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

My parents will leave USA soon. The airplane firstly go to Detroit from our city and go to Beijing from Detroit. So where do they their I-94 card? our city or detroit? Thanks.