RFK Jr. hasn't completely alienated all his famous in-laws, however. Earlier this week, Chris Pratt came to the defense of the politician, whose cousin Maria Shriver is the mother of Pratt's wife, Katherine Schwarzenegger.

Jesse Watters: "Why do you wear jeans when you work out." RFK Jr: "Well, I just started doing that a long time ago... I would go hiking in the morning and then i'd go straight to the gym." Robert F. Kennedy Jr. explains why he was wearing jeans during the "Pete and Bobby… pic.twitter.com/j5HIIRntGP

Annals of Internal Medicine editor Christine Laine says she won’t retract the study, as demanded by Robert F. Kennedy Jr., and "we’re not changing what we do because of threats."

The AAP published its own vaccine schedule in a break from federal guidance. HHS secretary RFK Jr. took to social media to respond.

The American Academy of Pediatrics had earlier urged parents to get young children vaccinated against Covid — pushing back against the health secretary’s stance.

The Marvel and “Jurassic World” star spoke about his interactions with the controversial Health and Human secretary during an appearance on Bill Maher's podcast.

Health and Human Services Secretary Robert F. Kennedy Jr. details his fitness challenge for America to complete 100 push ups and 50 pull ups in ten minutes on ‘Jesse Watters Primetime.’