Canada

Ontario’s economy is heavily reliant on their auto industry that’s pretty tightly coupled to the US.

Looking over statistics in Wikipedia, it's about 10% of the provincial economy, and not all automobile manufacturing in Canada is twinned to US companies (Honda and Toyota both operate plants as well, and probably have a better chance of competing with the Chinese companies). It's nearly all concentrated in a handful of cities in Southern Ontario. Their local economies would be in trouble if the US automakers pulled out, but I think the province as a whole would weather it, although some of Ford's more ambitious and useless projects would have to be put on hold due to the drop in tax revenue. Some of the factories and resource streams could probably be offered to non-US automakers or moved to manufacturing armoured vehicles, which (unfortunately) it looks like we may need more of anyway.

So, Ford is kind of speaking up for the short-term interests of a small, vocal subset of his constituents. The rest of us, not so much.

Imagine what could have been had Doug and the gang not canceled all the green projects and diversified our economy. But yay! we're gonna get tunnels under cars to drive more cars so,we can make more cars to get to work to make more cars.