President Donald Trump hit back at Canadian Prime Minister Justin Trudeau’s protests at the recent leveling of tariffs on steel and aluminium imports to the U.S. from his country.

Canada has treated our Agricultural business and Farmers very poorly for a very long period of time. Highly restrictive on Trade! They must open their markets and take down their trade barriers! They report a really high surplus on trade with us. Do Timber & Lumber in U.S.? — Donald J. Trump (@realDonaldTrump) June 1, 2018

Trump’s tweet comes after the U.S. levied steel and aluminum tariffs on Canada, Mexico, and the European Union. All three parties quickly announced that retaliatory action would be taken reciprocally on the U.S. in light of the tariffs.

Trudeau was particularly scathing in response, saying, “We have to believe that at some point, common sense will prevail. But we see no sign of that in this action today by the U.S. administration.”

“We have to believe that at some point, common sense will prevail. But we see no sign of that in this action today by the US administration,” Canadian PM Trudeau says after new US tariffs. https://t.co/Dz0dYFPc2R pic.twitter.com/7RaRBfejZP — NBC News (@NBCNews) June 1, 2018

Trump also issued a statement on trade with Canada late Thursday, saying, “The United States has been taken advantage of for many decades on trade. Those days are over. Earlier today, this message was conveyed to Prime Minister Justin Trudeau of Canada: The United States will agree to a fair deal, or there will be no deal at all.”