Kyra Kennedy, 29, is the youngest daughter of health secretary nominee Robert F. Kennedy Jr.

Robert F. Kennedy Jr., a former presidential candidate and environmental activist, endorsed Donald Trump last year and threw his weight behind a campaign to “Make America Healthy Again.” For the past two decades he has been best known for airing skeptical views on vaccines.

Is RFK Jr. a doctor? Robert F. Kennedy Jr.’s education and career have sparked debate. Explore his background and what his credentials reveal.

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

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

Related: Caroline Kennedy Issues Chilling Warning About RFK Jr.'s Appointment. Up until he was named as Trump's pick to lead the Department of Health and Human Services Department

Caroline Kennedy, daughter of former President John F. Kennedy, warned senators of her “predator” cousin ahead of his first confirmation hearing on Wednesday. In a letter first reported by The Washington Post, she wrote that his victims included family members and parents of sick children.

Like Trump, Kennedy for years has wielded a firehose of falsehoods across multiple fronts and has engaged in assorted misconduct and odd behavior, so much so that the individual lies and misdeeds zip by and blur into a mess that becomes tough for the media to thoroughly depict and hard for the public to absorb.

Doctors and scientists gathered to object Robert Kennedy Jr.'s confirmation as health secretary, citing his anti-vaccine stance.

During his confirmation hearing for health secretary on Jan. 29, Robert F. Kennedy Jr. called the Make America Healthy Again agenda one of the most "powerful movements I’ve ever seen.”