The Globe and Mail reports in its Saturday edition that President Donald Trump returned to power two years ago with a clear desire to bend Canada to his will. The Globe's Tim Shufelt writes that every attempt, however, to apply economic force seems to collide with America's own interests. It seems the closer the President gets to causing Canada harm, the more he strikes at the connective infrastructure between the two economies. Mr. Trump keeps testing Canada's limits only to find his own. He's floated the idea of buying potash from Belarus to offset reliance on Canada's potash. Good luck with that. Estimates suggest the shipping costs alone would exceed the price of Canadian potash. That's if Belarus had the supplies, which it does not. Mr. Trump's scheme to take Venezuelan oil reserves officially put "Canada on notice." Sure, for what though? The President is trying to replace a reliable and cost-effective relationship with Canada, which supplies four million barrels of oil daily to the United States at discounted prices. This oil travels via pipeline to refineries in the Midwest and Gulf Coast. The Venezuelan oil sector is a mess and it will be a long while before it can match Canada's oil output.