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

In a confirmation hearing for his nomination to head the $1.7 trillion Department of Health and Human Services, Robert F. Kennedy Jr. confused two of the massive healthcare programs he would be overseeing as secretary — Medicare and Medicaid — and insisted he was not anti-vaccine.

Robert F. Kennedy Jr. struggled to answer questions from Sen. Bill Cassidy (R., La.,) about Medicare and Medicaid. When asked about how care for people who are eligible for both federal health programs could be integrated,