Kennedy Jr. rejected characterizations of him as an anti-vaxxer in a Senate hearing Wednesday where senators will weigh his confirmation as Health and Human Services Secretary—as his former billionaire running mate threatens to fund primary challenges against lawmakers who vote against him.

Robert F. Kennedy Jr. faced aggressive questions about his skepticism of vaccines and other issues during the first of two scheduled Senate confirmation hearings.

RFK Jr. claimed he is not “anti-vaccine” and appeared unfamiliar with key aspects of healthcare insurance programs in his confirmation hearing.

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. faced intense scrutiny Wednesday on Capitol Hill as he sought confirmation for the role of Health and Human Services secretary.

Robert F. Kennedy Jr., President Trump’s pick for Secretary of Health and Human Services, was back on Capitol Hill on Thursday for a hearing before the Senate Health, Education, Labor and Pensions committee.

Robert F. Kennedy Jr. will face the Senate Health Committee on Thursday morning for a second day of confirmation hearings, after testifying before the Senare Finance Committee on Wednesday.

Robert F. Kennedy Jr., President Trump’s pick to lead the Department of Health and Human Services, is facing senators at his first confirmation hearing on Wednesday, before appearing before the Senate Committee on Health,

Robert F. Kennedy Jr., Trump's pick to head the Department of Health and Human Services, faces scrutiny for fees he may earn from lawsuits against Merck.

As Robert F. Kennedy Jr. faced skeptical senators Thursday in the second day of his confirmation hearing to lead the department of Health and Human Services, Sen. Bill Cassidy confronted Kennedy about vaccines.

The takeaways after Robert F. Kennedy Jr. faced questions from senators during his confirmation hearings to potentially lead the Department of Health and Human Services.