The trade war between the U.S. and Canada began with steep tariffs on Canadian goods, followed by retaliatory measures from Canada, and then Trump’s decision to delay the tariffs by 30 days. The delay came after Trudeau promised a so-called Fentanyl Czar and stepped up border security. Canadian political scientists Daniel Drache and Marc Froese say Trump’s tariff threats show the brute power of an imperial presidency. We speak with Marc Froese, professor of political science, and founding director of the International Studies Program at Burman University in Alberta.