I've been following the protests in Canada pretty closely. Just posted this elsewhere:

The day before yesterday, truckers (and drivers of regular cars) spread the demonstrations to the Ambassador Bridge in Detroit/Windsor Ontario. Many people on both sides of the border commute daily across that bridge and something like 25-35% of all cross-border freight comes across it. During rush hour last night, the Canada-bound lanes were completely shut down, and later, both sides were shut down. (Currently, the Canada-bound lanes are shut.) The traffic includes a great deal of auto parts going both into and out of Canada.

Meanwhile, there are reports that the Mounties and Ottawa police are planning to begin arrests before the week is out.

But, if you stop and think about who the protesters are–highly mobile truckers–and think about the border crossings in both Coutts and, now, Windsor being shut down, you realize how very stuck the government is.

Truckers are mobile. Despite a vast US/Canada border, there are actually a limited number of major highway crossings, especially in the east, where the Great Lakes are in the way. There’s no bridge across Lake Superior.

Looking at the map, there is the I-5 near Vancouver, the I-15 in Coutts, the I-29 going to Winnipeg along the ND/MN border, there is a non-interstate crossings near International Falls and Thunder Bay, the I-75 out of the UP of Michigan, the Ambassador Bridge in Detroit, the I-69 & I-94 out of Flint (which is seriously backed up this morning going into Canada), there are crossings in Buffalo, another north of Syracuse, then crossings near Montreal and Quebec City.

That’s just a dozen major highway crossings, and there are a lot of trucks (and farmers) in Canada.

If they start cracking down in Ottawa, look for trucks to block more crossings and slowing down all truck traffic nationwide.

Trudeau has few cards to play.