FDA Commissioner Stephen Hahn suggested on Sunday that he may fast track Phase 3 of a coronavirus vaccine clinical trial, leaving many in the medical community to wonder if he is reacting to pressure from the White House. Clinical professor emeritus at UC Berkeley’s School of Public Health and editorial board chair for UC Berkeley Health and Wellness Publications Dr. John Swartzberg told CBSN that truncating the process compromises our ability to know whether a drug is safe or not.