Robert F. Kennedy Jr.
Kennedy has since apologized for the remarks, but with a staunchly pro-Trump twist.
Caroline Kennedy's remarks against RFK Jr. are just the latest from his family.
Kathleen Sebelius, who served as HHS secretary under Barack Obama, warned that Kennedy would be an "absolutely terrifying" choice to lead the department.
The incoming president doesn't seem to care if his nominees can't win Senate confirmation.
One person said having an anti-vaxxer like Kennedy lead the Cabinet department is "like naming a flat-earther to lead NASA."
The president-elect has said he'll let Kennedy "go wild" on health policy in his administration.
Rumours about the campaign's future had swirled since Tuesday, when running mate Nicole Shanahan said the two were exploring their options.
Amid boos, the GOP presidential hopeful urged the skeptical group of conservatives to give him “lots and lots of libertarian votes.”
The former president ranted about Kennedy in a social media post on Thursday, calling his views on vaccines "fake" like "everything else about his candidacy."
Kasie Hunt played footage that instantly shut down the presidential candidate's claim.