Robert F. Kennedy Jr. said that he did not promise Sen. Bill Cassidy (R-LA) that he would not change the personnel of a key CDC vaccine panel.

GOP Sen. Bill Cassidy said a vaccine advisory panel should delay its next meeting and raised questions about potential bias of RFK-appointed members.

After weeks of staying mostly quiet about Health Secretary Robert F. Kennedy's remaking an influential committee that advises the federal government on vaccinations, U.S. Sen. Bill Cassidy Monday