特朗普宣布对加方征收10%额外关税

Group 1 - The core viewpoint of the article is that President Trump announced a 10% additional tariff on Canada in response to perceived misleading advertising that misrepresented former President Reagan's stance on tariffs [1][3]. - Trump accused Canada of using a "forged" video of Reagan's speech to mislead the public and influence the U.S. Supreme Court's decision on tariff issues [1][3]. - The Canadian government, represented by Prime Minister Carney, expressed readiness to resume trade negotiations with the U.S. but stated it cannot control U.S. trade policies [3].