A ban on several Canadian imports, including alcohol, dairy and motorcycles, has officially taken effect, marking the latest escalation in the ongoing trade dispute between the United States and Canada.

The measure follows executive orders signed on 8 September by the Trump administration in response to retaliatory tariffs imposed by Canada earlier in the month.

The ban targets nearly C$1 billion (about $710 million) worth of Canadian liquor exports, whey products used in protein powders and shipments of motorcycles.

U.S. officials maintain existing 50 percent tariffs on Canadian dairy, alcohol, steel and aluminium, and a 25 percent tariff on Canadian‑built vehicles.

Canada has responded with duties ranging from 15 percent to 50 percent on more than 700 American products, and most provinces have halted sales of U.S. liquor.

Prime Minister Mark Carney said Ottawa will not pursue further retaliation, describing the overall economic impact on Canada as modest.

U.S. Trade Representative Jamieson Greer told CNBC that while conversations about potential deals continue, there is no urgency on the U.S. side to reach a new agreement.

President Donald Trump reiterated his criticism of Canada, accusing it of treating the United States unfairly.

Industry groups warn the ban could severely disrupt the Canadian liquor sector, which exported roughly 93 percent of its total liquor output to the United States in 2025.