Kennedy, a Democrat who ran as an independent but ended up supporting Trump in the 2024 presidential campaign, was grilled by senators over his views on vaccines, abortion, Medicaid and more during two days of confirmation hearings.

During his Senate confirmation hearing, Kennedy claimed he is not against vaccination, contrary to decades of public comments.

Robert F. Kennedy Jr.’s nomination to be the nation’s top health official is uncertain after a key Republican joined Democrats to raise persistent concerns over the nominee’s deep skepticism of routine childhood vaccinations that prevent deadly diseases.