Robert F. Kennedy Jr. worked strenuously Wednesday to clarify his views on vaccines after a top Democrat challenged him on past statements and actions that seemed to suggest he was a blanket opponent of shots.

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.

Kennedy Jr. scrapped with senators for more than four hours Wednesday, trying to defend everything from his “conflicting” claims on vaccines to his stance on abortion to past statements that the virus causing COVID-19 was “ethnically targeted” against black and Caucasian people.

RFK Jr.'s testimony to senators clashed with past articles and letters he wrote concerning Samoan vaccine policy

Senator Elizabeth Warren (D-MA) asked Robert F. Kennedy Jr. to commit to not taking money from lawsuits aimed at vaccine makers if he is confirmed as Secretary of Health and Human Services.

Waco community mourning death or Dr. Charles A. Shoultz, founder of Waco Cardiology

Robert F. Kennedy Jr., President Donald Trump’s nominee to head the US Department of Health and Human Services, told a US Senate committee that he would not stop anyone from getting polio and measles vaccines.

Senator Elizabeth Warren (D-MA) asked Robert F. Kennedy Jr. to commit to not taking money from lawsuits aimed at vaccine makers if he is confirmed as Secretary of Health and Human Services.

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 Jr.’s repeated support for vaccines during Senate confirmation hearings follow a long history of disparaging them.

Contentious hearings to consider Robert F. Kennedy Jr. to lead the Department of Health and Human Services this week have