Stock markets tracked U.S. stock futures lower early on Friday after Wall Street notched fresh record highs in the previous session. Late Thursday, U.S. President Trump said he would put a 35% tariff on imports from Canada effective Aug. 1, hard on the heels of his threat of a 50% tariff on Brazilian imports. Ahead of earnings season, though, stock markets have largely taken the most recent round of tariff broadsides in their stride.