OTTAWA—Canadian Prime Minister Justin Trudeau warned President Trump that his renewed pledge to impose a 25% tariff on all Canadian imports, starting as early as Feb. 1, risks derailing his effort to usher in a “golden age” for America,

Trump said in an Oval Office signing ceremony on Monday that his administration will impose a 25% tax on goods from Canada and Mexico that may come as soon as February 1 – a move that could raise prices for American consumers.

Trump pledged in his inaugural address that tariffs would be coming in a speech in which he promised a golden era for America. He later said Canada and Mexico could be hit with the tariffs as soon as Feb. 1, though he signed an executive order requesting a report coordinated by the Secretary of Commerce by April. 1.