President Donald Trump threatened to rename Lake Ontario to “Lake America” amid his escalating tariff war with Canada.“The United States is giving serious consideration to changing the name of Lake Ontario to Lake America in that we don’t expect to doing much business with Ontario any longer,” the Republican president wrote on Truth Social on Tuesday morning. “Thank you for your attention to this matter!”His remarks capped a tumultuous week in U.S.-Canada relations, marked by the collapse of trade negotiations, the imposition of steep tariffs and a bitter exchange with Ontario Premier Doug Ford, who called Trump a “dictator.”On Saturday, the U.S. imposed a 50 percent tariff on about $20 billion of Canadian imports after last-minute talks between Ottawa and Washington broke down. The levies apply to a range of goods, from wine to hockey sticks to honey.Canadian Prime Minister Mark Carney liked the measure to armed conflict, telling reporters on Saturday, “You’re at war when you get attacked. We got attacked.” He said Canada would respond with “dollar-for-dollar” retaliatory tariffs on U.S. goods beginning September 8.Trump escalated the trade war Monday, announcing another round of tariffs on Canada, one of the United States’ largest trading partners and longtime allies.“On January First, 2027, Tariffs on all Cars, Trucks, both large and small, Automotive Parts, and Steel, will be increased to 50%,” Trump wrote on Truth Social. “Build in the U.S. and there are ZERO TARIFFS.”Also on Monday, Ontario Premier Doug Ford unleashed a barrage of criticism against Trump. At a press conference, Ford called the Republican president a “bully,” a “dictator” and “the king of bankruptcies.” He also told Trump to “kiss my a**.”Trump had earlier labeled Ford — the brother of the late Toronto Mayor Rob Ford — a blustering “flunky.”This is a breaking story...