The Trump administration announced new tariffs of 50% on various Canadian products, citing alleged discriminatory trade practices against U.S. industries. President Donald Trump signed three separate proclamations targeting sectors including motor vehicles, alcohol, and dairy products. These tariffs are authorized under Section 338 of the Tariff Act of 1930, a rarely invoked provision allowing such measures when trade discrimination is found. The levies will take effect 30 days after their signing, impacting Canadian exports like wine, hockey sticks, and cement, among others.

Officials emphasized that these tariffs will apply broadly, regardless of any existing commitments under the U.S.-Canada trade agreements, signaling a tough stance on what the administration claims is unfair treatment. This latest move intensifies ongoing trade tensions between the neighboring countries, which have escalated over the past year. Relations between the two have deteriorated amid Trump’s broader tariff-driven trade agenda and his criticism of the North American trade pact involving Mexico.

In response to the announced tariffs, Ontario Premier Doug Ford urged Canada to retaliate “tariff for tariff, dollar for dollar” if the U.S. follows through. The Canadian Embassy in Washington had not commented as of the announcement. The situation follows a string of contentious exchanges, including the U.S. decision not to renew the USMCA agreement earlier this month and Trump’s recent disparagement of Canada related to wildfires affecting air quality in the U.S., suggesting those costs should be added to the tariffs.

The use of Section 338 for these tariffs is notable because this authority has not been publicly exercised since 1949. Legal experts describe it as an obscure tool granting the president the ability to impose steep tariffs on countries engaging in discriminatory trade practices. This legal mechanism underscores the Trump administration’s aggressive approach to trade enforcement, marking a significant escalation in U.S.-Canada economic relations amid ongoing disputes.