The National Post reports in its Thursday edition that President Donald Trump's tariffs on steel and aluminum have been a "disaster" for the U.S. economy because they've fuelled inflation and failed to spur the promised growth in those industries, a new think tank report has found. The Post's Simon Tuck writes that the Montreal Economic Institute report, released Thursday, found that steel and aluminum prices in the U.S. market have soared since Mr. Trump slapped tariffs on those two critical industrial sectors, while failing to create new jobs. It has left consumers and industrial buyers facing higher price tags on autos, aircraft, construction, machinery and many other products. "The United States has imposed on itself a historically large price shock with little protected sector employment or output growth to show for it," concluded the report, titled Tariffs Deliver a Price Shock, Not an Industrial Revival. Despite the challenges, Canada seems willing to stick by its steel and auto sectors. University of Toronto's Joseph Steinberg says: "Mr. Trump's tariff policy has not helped revitalize the industry as promised. I don't think a single economist will say tariffs on metal is a good idea."