A group representing many of the country’s largest employers is asking Ottawa to beef up its national security powers to protect against “unprecedented dangers” facing Canadian business from foreign states including China, Russia and Iran. The Business Council of Canada, which represents 170 chief executives whose companies account for 50 per cent of the country’s annual economic output, is urging action as Ottawa prepares to unveil a package of national security reforms in the weeks ahead. It says Canadian companies face a series of threats “that erode Canada’s economic competitiveness by tilting the playing field to other’s advantage,” including “malign...