U.S. tariffs on Canada have put experts at odds over how appropriate the action was, particularly given the unaddressed demand side of the fentanyl epidemic.

Trump, who has imposed 25% tariffs on almost all products imported from Canada, has repeatedly said this year that the US has a “$200 billion” trade deficit with Canada – sometimes making the claim explicitly and sometimes using vaguer language about a supposed $200 billion subsidy or loss to Canada.