Robert F. Kennedy Jr. struggled to answer questions about Medicare and Medicaid, programs that affect tens of millions of Americans.

Robert F. Kennedy Jr., President Trump’s nominee for health secretary, repeatedly confused Medicare and Medicaid. He also tried to convince senators he was not against vaccines, despite past statements.

Follow along today for ongoing coverage of Robert F. Kennedy Jr.'s second Senate confirmation hearing. | Follow along today for ongoing coverage of Robert F Kennedy Jr.'s second Senate confirmation hearing.

RFK Jr.'s confirmation hearings continue today as he appears before a second Senate committee. Follow STAT's live updates.

During confirmation hearings, Robert F. Kennedy Jr. spoke to SNAP and his ideas for integrating nutritional health into federal assistance programs.

Robert F. Kennedy Jr. struggled to address key issues during his Senate confirmation hearing for Secretary of Health and Human Services.

Robert F. Kennedy Jr’s confirmation hearings began Wednesday before the Senate Finance Committee. He appears before the Health, Education, Labor and Pension committee on Thursday. Experts generally agree and have been concerned about this for years, especially rising rates of obesity and diabetes.

Robert F. Kennedy Jr. struggled Wednesday to answer questions about Medicare and Medicaid or to provide details about how he would work to drive down health care costs.

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

The exchange erupted when Warren asked Kennedy about his previous anti-vaccine statements, which he appeared to walk back during the hearing.

Robert F. Kennedy Jr, President Donald Trump's pick to run the top U.S. health agency, heads to the Senate Health committee on Thursday after being grilled by Democrats on a different committee over his past comments on vaccines and shifting stance on abortion rights.