WASHINGTON D.C., DC — Georgia Sen. Raphael Warnock and Robert F. Kennedy Jr. had a tense exchange during his confirmation hearing Wednesday to examine the RFK Jr.'s qualifications to be the country's top health official.

Robert F. Kennedy Jr. faced about 3.5 hours of questioning on topics including his past comments on vaccines and abortion during the first of his two confirmation hearings.

The Republican senator’s childhood bout with the disease has informed his ardent support for vaccines amid increasing skepticism of them within his party.

In hearing, RFK Jr. said he wasn't comparing the CDC to Nazi death camps, merely the "injury rate to our children to other atrocities."

Watch live as RFK Jr. faces questions from senators in his confirmation hearing as President Trump’s nominee to lead the Department of Health and Human Services.

Kathleen "Kick" Kennedy is the eldest daughter of Robert F. Kennedy Jr., who could be confirmed as health secretary in Trump's administration.

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

Robert F. Kennedy Jr., President Trump’s pick to run the Department of Health and Human Services, squared off with Democratic senators for more than four hours in a contentious confirmation hearing before the Senate Finance Committee.

Robert F. Kennedy Jr. has said vaccines are not safe. His support for abortion access has made conservatives uncomfortable.

If approved, Kennedy will control a $1.7 trillion agency that oversees food and hospital inspections, hundreds of health clinics, vaccine recommendations and health insurance for roughly half the country.

Robert F. Kennedy's nomination will put Republican lawmakers' loyalty to the test, as the former Democrat holds a range of unorthodox positions that could alienate both conservatives and liberals.

President Donald Trump's controversial pick to lead the Department of Health and Human Services, Robert F. Kennedy Jr., will testify in two Senate hearings starting Wednesday.