Kennedy struggled to identify and explain the fundamental aspects of Medicare, which provides coverage to older and disabled Americans.

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.

Kennedy is seeking to lead the Department of Health and Human Services, the $1.7 trillion agency that funds medical research, public health outreach, food and drug safety, hospital oversight, funding for community health care clinics as well as Medicare and Medicaid.

Robert F. Kennedy Jr. is appearing before the Senate Committee on Finance on Wednesday as he seeks confirmation to lead the Department of Health and Human Services.

Robert F. Kennedy Jr. said he supports vaccines and vowed to lessen the burden of chronic diseases during fiery questioning from senators who will decide whether to confirm him as President Trump’s health secretary.