I am also planing to go Vancouver to apply my Visa. I am not sure whether this is good idea. I want to get my US visa in Canada before going back to Nepal. This wold be great help if I could get rid of some hassles which might take place in Nepal and also save some time for family in Nepal. If you guys have any suggestions I would like to share with you. Currently I am with H1B and will be expired next year. Thanks