US lumber prices, which already have risen in recent months due to lower production in Canada, could see further gains after President-elect Donald Trump’s proposed tariffs. Lumber futures in Chicago rose as much as 2.1% to $599 per 1,000 board feet Tuesday. …Shares of forestry companies, including West Fraser and Interfor fell. Canada has faced a spate of sawmill closures amid higher US duties. The addition of tariffs would further threaten US lumber supplies as the nation seeks to rebuild in areas hit by hurricanes. …Kurt Niquidet, of the BC Council of Forest Industries, said the implementation of tariffs is more uncertain than duties, which are reassessed annually, but both would delve a financial blow to Canadian producers. Tariffs “will further exacerbate our nation’s ongoing housing affordability crisis,” Jim Tobin, president of NAHB… and forests in the US South, the continent’s biggest lumber production region, faced losses during the recent hurricane season.