Trump has been fabricating victim stories since the start of this whole saga - trade deficit, fentanyl are both not actually problems big enough to warrant his actions, but were provided as the reasons.

If the US wasn’t Canada’s friend, then the US had no friends. We’ve been each others’ closest allies for a century, if that doesn’t count, what does?

I’m quite sure the actual transaction is between private American utility companies and their counterparts across the border. There likely is a contract in place between the two companies which agrees on pricing, which would either spell out how rates are calculated, require a guaranteed warning period before rate increases, or disallow rate changes until the contract expires and is renewed.

However, Ford isn’t talking about a rate change between the companies. Even though it’s not a physical good, it’s cross-border trade which means it happens at the pleasure of the governments on both sides. Ford is talking about applying a tax to the electricity, which I assume his government has the power to do. Contracts between private entities cannot stop the government from levying a tax if it chooses.