Canadian Prime Minister Justin Trudeau argued that President Donald Trump’s “America First” agenda works best when the United States’s neighboring countries, Canada and Mexico, also benefit.

Canada and the U.S. have been butting heads in the wake of Trump’s inauguration. The countries have been arguing back and forth on tariffs and trade. Amid the disagreement, Trudeau argued that the recent tariffs implemented by the Trump administration would ultimately hurt workers and businesses in the U.S. and that the U.S. and Canada “should work together instead.”