President Donald Trump speaks after exiting Air Force One as he returns from Allentown, Pa., to Andrews Air Force Base, Md., Thursday, May 14, 2020. (Carlos Barria/Pool via AP)

Richard Bright, former director of the Biomedical Advanced Research and Development Authority, testifies during a House Energy and Commerce Subcommittee on Health hearing Thursday, May 14, 2020, on Capitol Hill in Washington. (Greg Nash/Pool via AP)