U.S. and Canada fail to reach tariff deal as 50% duties take effect

U.S. Trade Representative Jamieson Greer blamed Canada for the collapse of tariff talks, saying Ottawa changed its demands at the last minute, while new 50% tariffs on about $20 billion of goods took effect Saturday. Canadian negotiators left Washington Friday without a deal to prevent the tariffs, which cover wine, hockey sticks, cement and other imports. Greer told CNBC that progress was made Tuesday night, but Canada "wanted more" in final hours, echoing Prime Minister Mark Carney's accusations of "last-minute changes." The duties took effect at 12:01 a.m. ET Saturday, alarming business groups in both countries who warn of higher costs and industry disruption. Carney said Canada will retaliate with "dollar for dollar" tariffs against the U.S.