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.

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

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