Trade tensions between the US and Canada have intensified after negotiations in Washington broke down. Prime Minister Mark Carney alleges the Trump administration introduced unreasonable demands late in the discussion process. Consequently, the US has imposed 50% tariffs on $20 billion worth of Canadian imports. Canada is preparing to implement retaliatory tariffs on US products starting in early September. Experts warn this escalating trade conflict poses a significant risk to the economies of both nations. The future of trade relations remains uncertain as both sides dig in their heels.