Canada's big bank CEOs are urging the federal government to remove internal trade barriers, evaluate tax policies and other regulation as the country's top lenders cautioned that tariff and trade risks are clouding the economic outlook. The six big Canadian banks, which control more than 90% of the banking market and are among the biggest publicly listed companies in Canada, beat analysts' expectations for first-quarter profits but set aside large sums to shield against bad loans in an uncertain economy. U.S. President Donald Trump has vowed to impose 25% tariffs on most Canadian imports on March 4.