美国总统唐纳德·特朗普已签署三项公告，依据1930年《斯姆特-霍利关税法》第338条，对大多数进口自加拿大的商品征收50%的关税[1]。这项关税措施将在30天后正式生效[2]。
特朗普政府表示，此举旨在回应加拿大此前对美国汽车、酒精和乳制品实施的“不公平歧视”措施[1]。加拿大方面则指出，这些新关税是对美国先前施加关税的报复性行动[1]。加拿大总理马克·卡尼批评该关税政策直接违反了《美墨加协定》（USMCA）[1]。安大略省省长道格·福特表示，加拿大应当采取“以关税对关税、以美元对美元”的回应方式[1]。
在关税豁免方面，能源产品、鱼类以及关键矿物不在此次50%关税的覆盖范围内[1]。此外，特朗普还指示助手研究因野火烟雾对美国造成影响而向加拿大追加额外关税的可能性[1]。
除贸易争端外，美国国内汽油价格近期回升至平均每加仑4美元左右，这一现象被归因于“自由燃料网络”等商业运作因素[2]。与此同时，以色列军方确认在加沙地带所谓的“黄线”区域修建了一道长距离土质屏障，此举加剧了该地区的分裂局势[2]。
President Donald Trump has signed three proclamations imposing a 50% tariff on most imported Canadian goods, citing Section 338 of the 1930 Smoot-Hawley Tariff Act as the legal basis for the move [1]. The tariffs are scheduled to take effect in 30 days and notably exclude energy products, fish, and critical minerals [1][2].
Trump justified the decision by claiming it was a response to what he described as "unfair discrimination" against U.S. automobiles, alcohol, and dairy products by Canada [1]. However, Canadian officials have characterized the measures as retaliatory actions in response to previous U.S. tariffs [1]. Prime Minister Mark Carney condemned the imposition as a "direct violation" of the United States-Mexico-Canada Agreement (USMCA) [1]. Meanwhile, Ontario Premier Doug Ford stated that Canada should respond with matching measures, declaring the country would react "tariff for tariff, dollar for dollar" [1].
In addition to the trade dispute, White House officials indicated that Trump has asked aides to explore additional tariffs on Canada specifically due to the impacts of wildfire smoke in the United States [1].
The announcement coincides with other domestic and international developments. In the U.S., gasoline prices have risen back to approximately $4 per gallon, a trend attributed to commercial operations by groups such as the "Freedom Fuel Network" [2]. Internationally, the Israeli military confirmed the construction of a long-distance earthen barrier within the "yellow line" zone in Gaza, a move that has intensified regional divisions [2].