The Dow plunged 450 points on Monday morning after President Donald Trump surprised investors by threatening to impose higher tariffs on China in a late Sunday tweet. Follow live updates on @CNNBusiness https://t.co/M1UDVTJ069 https://t.co/z2k3ot6bWY

The Dow plunged 450 points on Monday morning after President Donald Trump surprised investors by threatening to impose higher tariffs on China in a late Sunday tweet. Follow live updates on @CNNBusiness https://t.co/M1UDVTJ069 https://t.co/z2k3ot6bWY (via Twitter http://twitter.com/CNN/status/1125395029382635521)