Ontario's premier Doug Ford banned US companies from provincial contracts until President Donald Trump lifts his planned tariffs on Canada.
"US-based businesses will now lose out on tens of billions of dollars in new revenues," Ford said on social media platform X today. "They only have President Donald Trump to blame."
Ontario also plans to tear up the province's contract with Elon Musk's Starlink internet services as part of a retaliatory move following Trump's decision to impose tariffs.
"Ontario won't do business with people hellbent on destroying our economy," Ford said. "Canada didn't start this fight with the US, but you better believe we're ready to win it."
Canada announced a targeted list of counter-tariffs that will go into effect on 4 February.
Ford has been particularly outspoken among Canada's provincial leaders, given the Ontario's close ties with the US auto industries and steel industries in particular.