Hello, my husband and I are Australian, currently traveling in the US on a multiple entry tourist visa. We are heading to Canada shortly but would like to stay for more than 12 months. Is is possible to cross the US border to get stamped for another 6 months in Canada? I know we can apply for an extension for an additional 6 months on top of the original 6 months, but we would like to stay for approximately 13-14 months in total. Is it possible to apply for an extension on an already extended tourist visa?