Wall Street was sluggish in the early going Tuesday as geopolitical concerns and President Donald Trump's trade policies weighed on markets. Futures for the S&P 500 and the Dow Jones Industrial Average are virtually unchanged before the opening bell.

U.S. stocks opened little changed, with investors likely staying sidelined until they can get more clarity on President Donald Trump's plans for tariffs on Mexican and Canadian goods, inflation and the market for artificial intelligence.

Can U.S. stock markets keep rising even at the rest of the world’s expense? President Donald Trump seems determined to test the limits of American exceptionalism but it’s a risky approach.New tariff threats and Trump’s castigation of Ukraine’s President Volodymyr Zelensky shook Europe.