Kennedy Jr.'s statements before the Senate Finance Committee on Wednesday revealed a concerning lack of knowledge about the major health programs he'd oversee, should he be confirmed as HHS secretary.

Robert F. Kennedy Jr., nominee for HHS secretary, seemed unfamiliar with the massive insurance program during Thursday’s hearing, mistakenly saying Medicare Part A mainly paid for primary care or physicians.

In a contentious confirmation hearing to become the nation's top health official, Robert F. Kennedy Jr. struggled to answer questions about Medicare and Medicaid, programs that affect tens of millions of Americans,