FILE - President Donald Trump talks about drug prices during a visit to the Department of Health and Human Services in Washington, Oct. 25, 2018. HHS Secretary Alex Azar listens at right. (AP Photo/Susan Walsh, file)

FILE - The Centers for Disease Control and Prevention is shown, March 15, 2020, in Atlanta. (AP Photo/John Bazemore, File)

FILE - President Donald Trump speaks to members of the press as Director Robert Redfield, right, looks at the headquarters of the Centers for Disease Control and Prevention in Atlanta, March 6, 2020. (Hyosub Shin/Atlanta Journal-Constitution via AP, file)