Robert Califf

Robert Califf

FILE – Dr. Robert Califf gathers his documents as the Senate Committee on Health, Education, Labor and Pension adjourn a hearing on the nomination of Califf to be commissioner of the U.S. Food and Drug Administration on Capitol Hill in Washington, Tuesday, Dec. 14, 2021. Califf, now head of the FDA, says a comprehensive review of the opioid painkillers that triggered the nation’s ongoing drug overdose epidemic is in the works. But he faces skepticism about the long-promised review from lawmakers, experts and advocates after years of delay. (AP Photo/Manuel Balce Ceneta, File)