a usual, the business press has the interests of investors in mind, and not the interest of workers.
it is of course better for investors to ensure common standards, but, one way to guarantee that the auto companies have no choice but to keep jobs in canada is to create different standards here, that force them to do things differently here.
it follows - if you are interested in workers, rather than investors - that separating the standards is actually a good thing, as it will create jobs in this country.
canada is a lot smaller than the united states, but it's still a wealthy country with an important auto market. nobody is going to forfeit the canadian market.
and, the flip side is that, once the americans elect a non-idiot that returns to a sane perspective on emissions, canada will have the capacity to export.
if i was ford or chrysler, i would just go ahead with the obama-period plan, anyways - it's not going to be more than a few years before the next government brings back even tougher standards. and, that should be the thinking across the industry, in both the united states and canada.
donald trump can't actually reverse the flow of time.
https://www.cbc.ca/news/business/canada-vehicle-emissions-1.4775503