Dear Da Xia,
I will fly from Shanghai to DFW and enter US at DFW airport on December 29. I will get my H1-B at DFW airport as the first step for my green card. I have Canadian passport and worked in DFW on TN1 by September 09 and left for Shanghai in September. My H1-B is effective since October 1st.
What should I prepare for the interview at the inspection office, any suggestion?
Thank you!