Robert F. Kennedy Jr. was confronted with a number of his conspiracy theories and a vexing abortion issue. But Republican senators treaded lightly.

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 approved, Kennedy will control a $1.7 trillion agency that oversees food and hospital inspections, hundreds of health clinics, vaccine recommendations and health insurance for roughly half the country.

The many controversial people appointed to the Trump administration, from Elon Musk to Robert F. Kennedy Jr., have at least one thing in common: They dislike and distrust experts. While anti-intellectualism and populism are nothing new in American life,

While Mr. Kennedy, seeking the job of health secretary, has been vocal about vaccines and his desire to overhaul the nation’s diet, he has said very little about other issues.

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

What to know from Robert F. Kennedy, Jr.’s hearings before the Senate Finance Committee on Wednesday and the Senate Health, Education, Labor, and Pensions on Thursday.

In a scathing letter Tuesday, Caroline Kennedy warned senators about her cousin, Robert F. Kennedy Jr., calling him a "predator."

During his confirmation hearing for health secretary on Jan. 29, Robert F. Kennedy Jr. called the Make America Healthy Again agenda one of the most "powerful movements I’ve ever seen.”

RFK Jr.’s famous name and controversial views collide in his bid for top health job Robert F. Kennedy Jr. has said vaccines are not safe. His support for abortion access has made conservatives uncomfortable.