The complaint challenges the ways that the US investigates products for subsidies and below-cost sales.
The US called the claims “unfounded”.
The action comes amid disputes between the two countries over areas such as dairy, aircraft sales and lumber as well as efforts to renegotiate the North American Free Trade Agreement.
Canada’s 32-page complaint cites US investigations of products from countries around the world, with decisions that date back to 1996.
Among other charges, Canada says the US improperly calculates rates and restricts parties from presenting evidence to defend themselves, with a cut-off for supplying information that comes too early in the process.
It also accuses the US International Trade Commission of being biased since disputes over which the body’s six commissioners are evenly divided automatically result in a finding for the US.
Eric Miller, president of the Rideau Potomac Strategy Group, which consults on North American trade issues, said the scope of the filing is “unprecedented”.
“It is global, it is over many years, it is systematic and so this is something that certainly, in the realm of WTO cases, is outside the norm in terms of its reach and its ambition,” he said.
Source: BBC News
