Landing 期间经香港回国。

Hi,

Is it okay for us to go back through HK after the landing then come back to US? Is it ture for F-1 stuent, they can go back to US from Canada without a new visa in 30 days? Is there any record showing our trip back to China?

I will gradulate this December. I am not sure if it is better for us to do the landing during the one week break in Thanksgiving or after the gradulation. I am afraid we won't be allowed to go back and I won't be able to finished the courses.

After the gradulation, can we go back in 30 days before I receive the practical training card?