The Globe and Mail reports in its Wednesday edition that tariffs have permanently tainted Canada-U.S. relations, according to several prominent Canadian business leaders, who say the country needs a new game plan for a changed world. A triple-bylined item led by Jameson Berkow says that regardless of how long the continental trade war launched by Donald Trump on Tuesday lasts, business leaders warn Canada's economic ties to its southern neighbour will never look the same. Executives are confident the country will eventually be able to diversify away from the U.S., but in the meantime Canadians are likely to suffer substantial economic pain. Experts have repeatedly warned a North American trade war would raise consumer prices across the continent, though Frank McKenna believes Canadians can outlast Americans in that environment. "Our pain threshold is way higher than America's because we know what we're fighting for and we're united on that," said Mr. McKenna, deputy chair of TD Securities and a former Canadian ambassador to the U.S. as well as premier of New Brunswick and a member of the Brookfield board. "In America, I think the pain threshold is extremely low ... and they have no idea why they're in this mess."