Okay, I think I've seen enough. The shotgun's staying home. I'll take my chances with the bears. Too many variables and unknowns. When I drove into Canada at the Kingsgate checkpoint (from Idaho on Hwy 95) both in 1986 and 2017, it was a breeze. Sounds like things are too uptight and risky now. I've got a strong sense now of Moore's law looming over it all: If I go unarmed, I'll breeze right through; if I take the shotgun, it'll all go south. Thanks again for the tips! Will let y'all know how it goes.
Probably the wisest choice here. Any border crossing is always a sketchy proposition, best to keep it as uncomplicated as possible