about I-94 card.

来源: 于 2007-03-10 15:07:45 [旧帖] [给我悄悄话] 本文已被阅读：次

Hi friends,
I have green card. If I visit China, should I return all previous I-94 cards of H-1B at the customs?

And when I come back to US, should I fill a new I-94?
Thanks so much!