Even if Democrats take the house and Senate, Trump controls the white house and Republicans own the Supreme Court.

I think you may have missed the wider point. The article's thesis was that we can't expect these policies to be cancelled because even when the democrats are in control, they do not roll back these policies.

For example, it used the Biden administration as recent evidence that democrat control doesn't mean walking back republican policy, even if the dems promise to roll back those specific policies. It also noted that prominent dems are not looking at rolling back tarrifs should they win in 2028.

Canadians are smart enough and understand our politics. They know 2028 at the soonest and even by then, it will take years or even decades to rebuild trust.

Canada realizes it doesn't matter (to the wider world) who has control. Until recently the overall goals of the two countries were in line so it wasn't a problem.