WASHINGTON, DC - AUGUST 23: FDA Commissioner Stephen Hahn looks on as President Donald Trump announces that the Food and Drug Administration is issuing an emergency authorization for blood plasma as a coronavirus treatment during a press conference in James S. Brady Briefing Room at the White House on on August 23, 2020 in Washington, DC.

WASHINGTON, DC – AUGUST 23: FDA Commissioner Stephen Hahn looks on as President Donald Trump announces that the Food and Drug Administration is issuing an emergency authorization for blood plasma as a coronavirus treatment during a press conference in James S. Brady Briefing Room at the White House on on August 23, 2020 in Washington, DC.