Trump's Canada Feud Marks Potentially Worst U.S.-Canadian Crisis in History

For generations, the United States and Canada have built an economic partnership so deeply interwoven that it became, in many ways, invisible — a quiet architecture of shared prosperity taken for granted on both sides of the border. Now, through an escalating campaign of tariffs and economic pressure, the Trump administration is testing whether that architecture can bear the weight of deliberate disruption. Analysts describe the current rupture not as a familiar trade quarrel but as something structurally different — a challenge to the very framework that has governed North American commerce f