"In late February 2020, Dr. Deborah Birx--a lifelong federal health official who had worked at the CDC, the State Department, and the US Army across multiple presidential administrations--was asked to join the Trump White House Coronavirus Task Force andassist the already faltering federal response to the Covid-19 pandemic. For weeks, she'd been raising the alarm behind the scenes about what she saw happening in public--from the apparent lack of urgency...