Meridian World Desk
President Donald Trump has signed five proclamations banning the import of most Canadian alcoholic beverages, whey, molasses and larger motorcycles, in a sharp escalation of the trade war between Washington and Ottawa. The bans, issued under Section 338 of the Tariff Act of 1930, will take effect on 29 September.
The White House said the measures were a direct response to Canada’s decision to impose new retaliatory tariffs on about 20 billion US dollars of American exports, including steel, dairy and agricultural equipment. Those tariffs took effect just after midnight on 8 September, hours before Trump signed the proclamations the following day.
Alongside the import bans, Trump also directed the General Services Administration, the federal agency that manages government purchasing, to remove Canadian-origin products from procurement schedules covering more than 50 billion dollars in federal spending. Separately, a list of product tariff changes — including the removal of cement and toilet paper from an existing tariff list — is set to take effect on 15 September.
A dispute years in the making
The latest measures build on a trade war that has been building since the start of last year, when Canadian provinces began pulling American alcohol from store shelves in response to earlier US tariff actions. Washington has already imposed 50% tariffs on about 20 billion dollars of Canadian products, a slice of trade equal to roughly 5% of the 381.92 billion dollars in goods Canada sent to the United States last year.
Tensions hardened further last month. Prime Minister Mark Carney terminated trade negotiations with Washington on 21 August, calling American demands “uneconomic” and “unfair”. Days before the latest proclamations, Trump also threatened the Canadian aerospace manufacturer Bombardier as the dispute widened. United States Trade Representative Jamieson Greer had criticised Canada’s retaliatory posture in the run-up to the ban announcement.
Canada’s own retaliatory tariffs, which took effect on 8 September, followed the collapse of talks and were framed by Ottawa as a proportional response to earlier US action. The White House fact sheet described the new import bans as answering both that retaliation and what it called Canada’s continued discrimination against US alcohol and dairy exports.
Canada’s response
Canada said on 9 September that it was assessing the new US measures. Dominic LeBlanc, the Canadian minister responsible for US trade relations, said Ottawa remained open to negotiation despite the escalation. Carney has defended his government’s retaliatory measures and its broader strategy of diversifying Canadian trade away from reliance on the United States.
The Distilled Spirits Council of the United States, a trade association representing American distillers, has urged the two governments to return to the negotiating table, warning of the toll the dispute is taking on the industry. The organisation has said the restrictions Canadian provinces placed on American alcohol sales have already hit US spirits exports to Canada hard, though the precise scale of that decline has not been independently established.
The practical effect of the new bans on US consumers and businesses will depend on how heavily each market relied on the newly restricted Canadian goods. Canadian whisky has long held a significant share of the American spirits market, and Canada has been a substantial supplier of whey products used in US food manufacturing, though exact trade figures for the affected categories vary and have not been fully verified.
What happens next
With the tariff list changes due on 15 September and the import bans following on 29 September, both governments face a narrowing window in which to reach an accommodation before the measures take hold. Officials from Canada and the United States have remained in contact since the proclamations were signed, though no date has been set for a resumption of formal negotiations.
The dispute has already reshaped cross-border commerce in alcohol, dairy and industrial goods over the past 18 months, and the latest measures signal that both Washington and Ottawa are prepared to extend that disruption rather than de-escalate. Businesses on both sides of the border are now bracing for the practical consequences of a trade relationship that has moved from tariffs to outright prohibition on an expanding list of products.