about I-94 card.

來源: 於 2007-03-10 15:07:45 [舊帖] [給我悄悄話] 本文已被閱讀：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!