S&P 500 index (DOG) Business and political leaders around the world have expressed shock and confusion over Donald Trump’s geopolitical and economic policies. Now, the stock market is letting its feelings be known, too. Having fallen in four of the five past weeks, the widely-watched S&P 500 index is down more than 3 per cent from its record intraday high on Feb. 19 as tariff flip-flops and Mr. Trump’s hostile exchange with Ukrainian President Volodymyr Zelensky on Friday have rattled investors. With weak consumer spending and less-than-spectacular results from AI chip giant Nvidia adding to the uncertainty, there’s only one...