The Canadian prime minister achieved a stunning political upset, running on an anti-Trump platform and promising to revive the economy. Now, he needs to deliver.

Mark Carney's ascent as Canada's new prime minister offers a chance for a reset in the US-Canada relationship.

W hatever his flaws as a politician turn out to be, Mark Carney does at least possess self-awareness. “You’re supposed to campaign in poetry and govern in prose,” he said in his final campaign speech on April 27th, on the eve of the election. “As the assembled media will tell you, I campaigned in prose. So I’m going to govern in econometrics.”