It would be hard to come up with a dumber tariff plan than President Donald Trump, but Liberal leadership candidate Mark Carney is giving it his best shot.

Carney released his carbon tax plan recently and it contained a tariff, a carbon tariff.

Carney said he would “change” the carbon tax. But he would replace it with a hidden industrial carbon tax. And, on top of it all, he would impose carbon tariffs on imports. In former central banker speak, this tariff is called a “Carbon Border Adjustment Mechanism.”