Hello Folks I am looking for some advice please let me know if you have any ideas regarding this. I am in my OPT right now and I am also working full time using my OPT. My question is can I travel to canada and come back to U.S after 2 weeks ( using automatic visa revalidation rule). In the past while i was  in school I have traveled to canada  multiple times and  returned back to U.S.A using AVR rule. Although my U.S visa is long expired i could still travel canada and return back within 30 days  showing  my I-20 at port of entry. Now since I am in my OPT I am little concern if I would have any trouble returning. do you folks have any ideas or a good link to check through. please le me know. thank you very much