Sen. Bill Cassidy, the top Republican on the Senate Committee on Health, Education, Labor and Pensions, concluded Thursday's hearing by saying he was "struggling" with the nomination due to Kennedy's vaccine positions. Kennedy notably refused to say vaccines don't cause autism as he faced pointed question from lawmakers.

Robert F. Kennedy Jr. is telling senators considering his nomination to lead the government’s health agencies he merely wants transparency about vaccines.

Robert F. Kennedy Jr., President Donald Trump’s nominee to head the US Department of Health and Human Services, countered sharp criticisms from Democratic Senators over his past questioning of vaccine safety by saying he would not stop anyone from getting polio and measles vaccines.