I am on my OPT, if I get my H1B visa approved in April, and my OPT expires at end of May, so there is a 4-month gap . My company has a branch office in Canada, I am thinking to go there to work during these 4-month, and come back in October. I need a re-entry visa to apply a temporary work permit to work in canada, so I need to go to Canada, but what is the name of this re-entry visa? still F1 (because I am still on OPT untill May 31st). thnaks for any help