How to hand in I-94 card?

来源: 于 2004-01-05 20:23:00 [旧帖] [给我悄悄话] 本文已被阅读：次

We have left USA but haven't handed in I-94 cards. We aren't going to back to USA in a few month. How to hand in our I-94 cards? Many thanks to any helper.