WATCH: Hearing Devolves Into Chaotic Shouting Match Between RFK, Democrat Senator

U.S. Health and Human Services Secretary Robert F. Kennedy, Jr. refused to give in to a grilling on Capitol Hill Thursday, sparring with a liberal U.S. Senate Democrat who attacked his effort to reveal the “truth” about mRNA vaccines produced to inoculate Americans against COVID-19.

Colorado Sen. Michael Bennett (D-CO) briefly lost control of his line of questioning when RFK challenged him to answer whether he was denying that some of the vaccines produced at the height of the pandemic have “never” been associated with heart-related issues. Studies have since uncovered that a small percentage of Americans, including teenagers, face a higher risk of myocarditis or pericarditis, or inflammation of the heart tissue.

“What you’re saying are lies,” Bennett chided Trump’s top health advisor during a Senate Finance Committee hearing.

Kennedy fired back, asking Bennett whether he was claiming that the vaccines have “never” been associated with adverse outcomes.

“Senator, are you saying that the mRNA vaccine has never been associated with myocarditis or pericarditis in teens? Is that what you’re trying to tell us?” asked an exasperated Kennedy.

Bennett dodged the question, singling out Kennedy for his appointments to a vaccine advisory panel that have drawn scrutiny from establishment figures in the health community.

“I am simply trying to say that the people you have put on that panel, after firing the entire panel–” he replied before Kennedy cut in.

“You’re evading the question!”

“I’m asking the questions here,” Bennett shot back after finding his footing.

“I’m asking the questions on behalf of parents and schools and teachers all over the United States of America who deserve so much better than your leadership!”

Committee decorum typically requires testifiers to remain silent while lawmakers are speaking. Kennedy, however, didn’t allow Bennett to get in the last word.

“Senator, they deserve the truth, and that’s what we’re going to give them for the first time in the history of that agency!” he exclaimed.

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Other Democrats on the committee attempted to pin RFK down on so-called Medicaid cuts contained in the Big, Beautiful Bill, which was passed into law in July.

Sen. Mark Warner (D-VA) asked RFK whether greater healthcare shortages will emerge in parts of the country where SNAP benefits will see reductions beginning in 2027.

“They already live in food deserts. They can’t get to a nutritionist because Medicaid doesn’t do enough reimbursement. If you’re going to want Americans to get healthier, should they have access to nutritionists? Should they have access to good science about healthy food? … Well, then how is that going to happen with the Medicaid cuts that are taking place?” Warner said.

“There are no cuts to Medicaid, sir,” Kennedy replied, NBC News reported.