Canada has filed a complaint with the World Trade Organisation (WTO) regarding the United States’ recent imposition of 25-per cent tariffs on steel and aluminium imports.
The tariffs, which came into effect on March 12, apply to a broad range of products with no exemptions, despite efforts by other countries to negotiate an exemption.
The WTO confirmed that Canada had requested dispute consultations with the US over the tariffs, arguing that they violate US trade obligations.

Canada is the largest supplier of steel to the United States, followed by Brazil and the European Union.
The US relies on imports for around half of its steel and aluminium needs, which are used in products such as cars, planes, and beverage cans.
The tariffs are part of President Donald Trump’s broader strategy to protect the US steel industry, which faces increasing competition, particularly from Asia.
By requesting consultations, Canada has formally initiated a dispute within the WTO. These consultations are an opportunity for both parties to resolve the issue without further legal proceedings.
If the consultations fail to solve the problem within 60 days, Canada can request that a panel adjudicate the matter. This complaint follows a separate action Canada took earlier in March regarding previous US tariff measures introduced by Trump.