At the edge of an economic precipice, the United States and Canada paused to reconsider the cost of confrontation. With hours remaining before sweeping tariffs would have reshaped the flow of goods between two deeply intertwined neighbors, President Trump announced a three-day reprieve — a gesture that acknowledged both the progress made and the distance still to travel. The pause is less a resolution than a held breath, a moment in which the long architecture of North American trade hangs in the balance of competing demands over cars, dairy, pipelines, and provincial liquor shelves.