Support The Bulwark and subscribe today.Previous presidents have cemented their legacies by acting decisively in times of crisis. Trump… not so much.US President Donald Trump speaks during the daily briefing on the novel coronavirus, which causes COVID-19, in the Brady Briefing Room at the White House on April 9, 2020, in Washington, DC. (Photo by JIM WATSON / AFP) (Photo by JIM WATSON/AFP via Getty Images)Virtually every historian or political scientist who considers such matters ranks Abraham Lincoln, Franklin Roosevelt, and George Washington as America’s greatest presidents. They do so...…Support The Bulwark and subscribe today.Previous presidents have cemented their legacies by acting decisively in times of crisis. Trump… not so much.US President Donald Trump speaks during the daily briefing on the novel coronavirus, which causes COVID-19, in the Brady Briefing Room at the White House on April 9, 2020, in Washington, DC. (Photo by JIM WATSON / AFP) (Photo by JIM WATSON/AFP via Getty Images)Virtually every historian or political scientist who considers such matters ranks Abraham Lincoln, Franklin Roosevelt, and George Washington as America’s greatest presidents. They do so...WW…