HHS nominee Robert F. Kennedy Jr. told Senator Ron Wyden he is "not anti-vaccine" in his confirmation hearing.

Robert F. Kennedy Jr. faced about 3.5 hours of questioning on topics including his past comments on vaccines and abortion during the first of his two confirmation hearings.

Senator Bernie Sanders, Independent of Vermont, brought up the Children’s Health Defense, which is the organization Mr. Kennedy co-founded that has spread falsehoods about vaccinations for children, pulling up images of onesies sold by the nonprofit that read “Unvaxxed, Unafraid” and “No Vax, No Problem.”

The nomination hearing for Robert F. Kennedy Jr. kicked off with a battle between President Donald Trump's choice to lead the Department of Health and Human Services and Sen. Ron Wyden (D-OR), as the Democrat confronted Kennedy over his past controversial comments about vaccines and other issues.

Robert F. Kennedy Jr. Confirmation Hearing at the Senate Financial Services Committee. Sen. Ron Wyden (D-OR) questions President Trump's nominee for HHS Secretary RFK Jr. over past vaccine statements.

HHS Secretary nominee RFK Jr. and Democratic Sen. Ron Wyden were involved in a heated exchange about Kennedy's past comments during his confirmation hearing on Wednesday.

Over rigorous questioning from senators Wednesday, Robert F. Kennedy Jr. laid out his vision to lead the Department of Health and Human Services, while backtracking on his past statements in support of abortion and against vaccines.

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

Robert F. Kennedy Jr. was accused of contradicting himself on vaccines in a heated exchange during his senate confirmation hearing Wednesday.

Robert F. Kennedy Jr. pushed back on questioning from Sen. Ron Wyden (D., Ore.) about his vaccine views. “I support the measles vaccine. I support the polio vaccine. I will do nothing as HHS secretary that makes it difficult or discourages” for people to get those vaccines,

Watch live as RFK Jr. faces questions from senators in his confirmation hearing as President Trump’s nominee to lead the Department of Health and Human Services.

Robert F. Kennedy's nomination will put Republican lawmakers' loyalty to the test, as the former Democrat holds a range of unorthodox positions that could alienate both conservatives and liberals.