The campaign to introduce sharia is back. Last time, the campaign took a populist approach, invoking multiculturalism. This time, the pro-sharia lobby is dangling the carrot of new niche markets and has the backing of Canada's major banks. Such icons of the corporate world as Citibank NA, HSBC Holdings PLC, and Barclays PLC have endorsed sharia banking and have started offering Islamic financing products to a vulnerable Muslim population.