Elected officials and ordinary citizens alike in both countries have been puzzling over the strange fact that Canadians were legally permitted to fly into the US via commercial aircraft — after having gone to a crowded airport and inhaling whatever particles happened to be in circulation — but barred from driving over the border alone in their private cars.
The discretionary powers granted to state authorities to curtail the spread of the virus have yet to be fully documented or interrogated. Did these tactics accomplish anything that benefitted public health? Particularly with a year and a half of hindsight, it’s doubtful. Unless “needlessly hassling a bunch of people” somehow counts as a public health triumph.