The United States is scheduled to unveil reciprocal tariffs on a wide array of trading partners, including Canada. Dubbed “Liberation Day” by Donald Trump, the measures are meant to even things out with those who, in Trump’s eyes, have unfairly taken advantage of the US with tariffs and other non-tariff barriers. …Aside from steel, aluminum and autos, which are already facing separate tariffs, here are the issues the U.S. has singled out as problematic in their trade with Canada that could factor in to the Liberation Day announcement, and what economists and trade officials have to say about them. What Trump says: He has lumped his anger about dairy and lumber tariffs together, threatening to act immediately on unfair treatment by Canada. He also said the U.S. does not need any Canadian lumber. Reality Check: There is far from enough lumber produced in the U.S. to meet building demand.