Over many years, Kennedy has been clear about his beliefs on vaccines in dozens of interviews, podcasts and social media posts.

Trump, a Republican, selected Kennedy in November, shortly after he won the 2024 presidential election, saying Kennedy would “end the Chronic Disease epidemic” and “Make America Great and Healthy Again!” As one of the most prominent anti-vaccine activists in the world, Kennedy’s nomination immediately alarmed some public health officials.

Donald Trump has promised he'd let Robert F. Kennedy Jr. "go wild" on health, food and medicine as head of the Department of Health and Human Services. He now faces two separate confirmation grillings over his controversial views -- on everything from vaccines to abortion -- that have both Republicans and Democrats raising concerns.

Cassidy is expected to challenge RFK Jr. on his vaccine skepticism and views on public health in today's confirmation hearing.

Robert F. Kennedy Jr., a former presidential candidate and environmental activist, endorsed Donald Trump last year and threw his weight behind a campaign to “Make America Healthy Again.” For the past two decades he has been best known for airing skeptical views on vaccines.

If confirmed by the Senate, Kennedy would head the Department of Health and Human Services (HHS), which oversees many of the country’s health agencies, from the Food and Drug Administration (FDA) to the Centers for Disease Control and Prevention (CDC).

Robert F. Kennedy Jr. has said vaccines are not safe. His support for abortion access has made conservatives uncomfortable.

Robert F. Kennedy Jr. is on Capitol Hill on Wednesday for a Senate confirmation hearing for the role of Health and Human Services Secretary.

Caroline Kennedy urged senators to reject Robert F. Kennedy Jr.’s nomination as health secretary, questioning his ethics and views on vaccines.

A Kennedy could soon serve in a Cabinet position once again—but new claims from Robert F. Kennedy Jr.‘s cousin on the eve of his confirmation hearing threaten to tear the political dynasty apart. Kennedy,