U.S. President Donald Trump speaks to the White House Press Corps on Air Force One while flying back to Joint Base Andrews, Maryland, after visiting the sites of recent mass shootings in El Paso and Dayton, U.S., August 7, 2019.
Leah Mills | Reuters
President Donald Trump’s chaotic behavior can make financial markets gyrate any moment — and, given his split-personality constituency, likely will do so through Election Day 2020.
Trump pushed the Dow up nearly 400 points on Tuesday with a simple announcement: His administration will postpone additional tariffs on Chinese imports that would have hiked prices on popular consumer goods. The threat of those tariffs had helped drive markets down…