President Donald Trump announced a 50% tariff on some Canadian goods, set to take effect on August 19, escalating trade tensions between the two countries. The administration cited alleged unfair discrimination against U.S. products as the reason for the duties, which will be enacted using Section 338 of the Tariff Act of 1930, a provision never before used for such measures. Ambassador Jamieson Greer stated that Canada has removed U.S. alcohol products from shelves and given better market access to EU dairy products, while also capping U.S. vehicle exports. The tariffs will not apply to energy, potash, fish, critical minerals, or products already covered by separate sector-specific duties, including autos and metals. Notably, goods qualifying under the US-Mexico-Canada Agreement (USMCA) will not receive exemptions. The announcement comes amid deteriorating relations, with Ontario Premier Doug Ford dismissing Trump's claims of Canadian negligence regarding wildfire smoke and urging U.S. assistance, while also threatening retaliatory tariffs.