No personal experience, but this thread on Teton Gravity appears to have good info. Sorry that the link is via Tapatalk. If that doesn't work. Tetongravity.com , then forums and search for "crossing border into Canada"
https://r.tapatalk.com/shareLink?url=https%3A%2F%2Fwww%2Etetongravity%2Ecom%2Fforums%2Fshowthread%2Ephp%3Ft%3D240872&share_tid=240872&share_fid=28572&share_type=tSent from my SM-N920V using Tapatalk