US President Donald Trump has said he will slap a 35% tariff on Canadian goods starting 1 August, even as the two countries are days away from a self-imposed deadline to reach a new deal on trade.
The missive came as Trump also threatened blanket tariffs of 15% or 20% on most trade partners, and said he would soon notify the European Union of a new tariff rate on its goods.
Trump announced the new levies on Canada on Thursday in a letter posted to social media and addressed to Prime Minister Mark Carney.
The US has already imposed a blanket 25% tariff on some Canadian goods, and the country is feeling the pain of the Trump administration’s global steel, aluminium and auto tariffs.
The letter is among more than 20 that Trump had posted this week to US trade partners, including Japan, South Korea and Sri Lanka.
Like Canada’s letter, Trump has vowed to implement those tariffs on trade partners by 1 August.
The US has imposed a 25% tariff on all Canadian imports, though there is a current exemption in place for goods that comply with a North American free trade agreement.
It is unclear if the latest tariffs threat would apply to goods covered by the Canada-United States-Mexico Agreement (CUSMA).
Trump has also imposed a global 50% tariff on aluminium and steel imports, and a 25% tariff on all cars and trucks not build in the US.
Canada sells about three-quarters of its goods to the US, and is an auto manufacturing hub and a major supplier of metals, making those tariffs especially damaging to those sectors.
Trump’s letter said the 35% tariffs are separate to those sector-specific levies.
“As you are aware, there will be no tariff if Canada, or companies within your country, decide to build or manufacture products within the United States,” Trump stated.
He also tied the tariffs to what he called “Canada’s failure” to stop the flow of fentanyl into the US, as well as Canada’s existing levies on US dairy farmers and the trade deficit between the two countries.
Canada has been engaged in intense talk with the US in recent months to reach a new trade and security deal.
At the G7 Summit in June, Prime Minister Carney and Trump said they were committed to reaching a new deal on within 30 days, setting a deadline of 21 July.
In late June, Carney removed a tax on big US technology firms after Trump labelled it a “blatant attack” and threatened to call off trade talks.
Carney said the tax was dropped as “part of a bigger negotiation” on trade between the two countries.
The BBC has reached out to the Canadian officials for comment.