President Trump’s ban on nearly $1 billion worth of Canadian goods went into effect Tuesday, marking the latest salvo in a trade war between the U.S. and its longtime ally to the north. The restrictions include Canadian dairy products, motor vehicles and many alcoholic beverages. Trump, in signing the executive orders to ban the goods, cited Canadian “discrimination” against the American equivalents. Jacob Jensen, as the American Action Forum, said the limits cover $967 million worth of Canadian imports, based on 2025 data. The president last month slapped 50 percent tariffs on $27.6 billion worth of Canadian products, levies that Canadian Prime Minister Mark Carney’s government matched “dollar for dollar. …Carney, meanwhile, has used the trade dispute with Trump to shift his country’s cooperative focus elsewhere.