Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, wears a Washington Nationals protective mask after a House Energy and Commerce Committee hearing in Washington, D.C., U.S., on Tuesday, June 23, 2020. Four of the country’s top health officials were urged to take more of a leadership role in the national battle against Covid-19 as virus rates climb in reopening states and President Donald Trump calls for testing to be cut back. Photographer: Kevin Dietsch/UPI/Bloomberg via Getty Images