Robert F. Kennedy, Jr., President Trump's nominee to serve as Secretary of Health and Human Services testifies during a Senate Committee on Health, Education, Labor and Pensions hearing for his pending confirmation on Capitol Hill, Thursday, Jan. 30, 2025, in Washington. (AP Photo/Rod Lamkey, Jr.)
WASHINGTON (AP) — Robert F. Kennedy Jr. 's bid 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.