US bans Canadian dairy, alcohol and motorcycles as trade war escalates

Two nations whose economies grew intertwined over generations now find themselves in an open trade confrontation, each measure answered by another in a rhythm that has unsettled the architecture of North American commerce. The United States has moved to ban Canadian dairy, alcohol, and motorcycles, while Canada has levied $20 billion in retaliatory tariffs and its prime minister speaks of sovereignty and self-reliance. What began as disputes over dairy markets and lumber subsidies has become something larger — a test of whether longstanding alliance can survive the pressure of economic nationa