The backstory here is RFK Jr. is an established anti-vaxxer -- or at least anti-vaxx mandate -- for children, so some guests were shocked to see invites to his and Cheryl's shindig included a recommendation attendees should be inoculated ... according to Politico.
Kennedy's explanation to Politico was, "I guess I'm not always the boss at my own house."
Well, he didn't call Cheryl out by name, but ... the insinuation's pretty clear.
Kennedy also said his guests weren't carded at the door -- it was more of an honor system type thing.
RFK Jr. very proudly leads the Children’s Health Defense ... an anti-vaccination group that's been accused of spreading pandemic misinformation -- and he's been banned, at times, from Instagram for some of his COVID-related posts.