On Monday, Chrystia Freeland, the finance minister and deputy prime minister, will present her much-delayed fall economic statement just in time for the holidays. And the government has promised that it will address the issue that preoccupied politicians this week: how to respond to President-elect Donald J. Trump’s threat to impose potentially devastating 25 percent tariffs on exports to the United States from Canada and Mexico unless the two nations tighten their borders.
