Louisiana Senator Bill Cassidy struggled with RFK Jr.'s anti-vaccine history, but supports his goal for a healthier American diet.

The fate of Robert F. Kennedy Jr.’s bid to run HHS may rest with a Republican wrestling with his training as a physician and his instincts as a politician.

Sen. Bill Cassidy, a Republican from Louisiana and physician, said before the hearing that he would vote to confirm Kennedy. During his second hearing before the Senate Health, Education, Labor and Pensions (HELP) Committee, Cassidy, the committee chairman, repeatedly grilled Kennedy about his claims about vaccines and autism.