Xiaobaitu,
Thank you for your answer yesterday, and now I have follow-up questions regarding the I-94 when leaving U.S. at the airport.
I checked my latest H1 I-94 yesterday, there are 2 parts at the bottom of my latest H1 approval notice. The bottom left part says for my personal records, and bottom right part is I-94 form.
1. When I leave U.S., should I turn in both bottom parts (left and right) or just the right part?
2. When I leave U.S., does any authority stamp my passport to indicate I leave U.S.?
I remembered when I l left China years ago, at Beijing airport I was stamped on my passport.
Thanks a lot for your time.