What do you think tariffs are? They're literally defined as isolationist and protectionist methods by a government.
https://www.progressivepolicy.org/tariffs-and-economic-isolationism-four-principles-for-a-response/
https://uslawexplained.com/isolationism
Here's a wikipedia article if you'd like: https://en.wikipedia.org/wiki/Tariff
It's also the terminology applied preceding to WW2 when isolationist policies of European countries applied tariffs to imports from competing empires. Which is why the couldn't recover well from WW1.
So I appreciate the condescending tone, I really do.
But if your only issue with my comment is that "I don't understand tariffs" and that's what you decided to be aggressive about when the main premise is Carney's overreach of power, then that's not my problem.