Donald Trump says US tariffs on Canada, Mexico, and China are necessary after decades of being "ripped off" by trade partners. Canadian PM Trudeau warned of "real consequences" for American consumers.

Mexico and Canada swiftly responded with their own tariffs, an China complained at the World Trade Organization that it would 'take corresponding countermeasures'

Canada's response to tariffs imposed by Donald Trump involves a broad federal reaction, including taxes on a list of US exports, as well as provincial retaliations. Like China, the country plans to file a claim with the WTO.