AdvertisementSKIP ADVERTISEMENTYou have a preview view of this article while we are checking your access. When we have confirmed access, the full article content will load.President Trump invoked a 1930 law after Canada imposed new tariffs on U.S. goods, which followed his own recent tariffs in a widening trade war.Listen · 8:29 min A shipment of Montana lumber last week in Canada, where it will be used to build beehives.Credit...Todd Korol for The New York TimesSept. 8, 2026President Trump moved on Tuesday to ban a small set of imports from Canada, including some alcoholic beverages, dairy byproducts and molasses, in a drastic escalation of a bilateral trade war that risked economic blowback on both sides of the border.The limited ban, which is set to take effect in late September, was part of a series of retaliatory measures that the White House announced in the hours after Canada imposed new tariffs up to 50 percent on a variety of U.S. goods.While Mr. Trump’s move appeared to encompass only a small portion of trade between the countries, it amounted to a remarkable attempt to punish a close U.S. ally, mere weeks after trade talks between the two neighbors collapsed in acrimony.It was not clear late Tuesday if, or how, Canada might respond to Mr. Trump’s latest retaliatory actions. Earlier in the day, the president also took steps to try to limit the federal government’s ability to buy Canadian goods. He wrote on social media that the policy would remain in place “unless Canada restores full and fair reciprocity for American Farmers and Companies.”ImageUnder Prime Minister Mark Carney, Canada imposed retaliatory tariffs on U.S. goods on Tuesday. Credit...David Jackson/The Canadian Press, via Associated PressThe list of Canadian imports that Mr. Trump has moved to ban is heavily weighted toward liquor and wine and also includes alcohol-free beer. A number of milk byproducts would also be shut out — particularly various forms of whey, which is used for protein supplements — as well as molasses. Under a series of orders signed by the president, the prohibitions would take effect Sept. 29.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe.AdvertisementSKIP ADVERTISEMENT