Republican Louisiana Senator Bill Cassidy cast the swing vote on advancing President Trump's nomination of RFK Jr. to lead the Department of Health.

Health chief nominee Robert F. Kennedy Jr. wouldn’t deny his long-held skepticism about vaccinations, but he agreed not to discourage parents from vaccinating their children — and that

Republican Sen. Bill Cassidy of Louisiana, a former physician who has spent his career touting the safety of vaccines, will likely determine whether Robert F. Kennedy Jr., a vaccine skeptic, becomes the country’s next Health and Human Services secretary.