I have no evidence for the existence of Donald Trump, Kamala Harris, or the contemporary persistence of United States of America, except what I get from the mainstream media. (People of my close acquaintance claim to have come from,or been to, the United States of America but that's old information).
As for Kennedy soliciting a job from Harris, the claim is repeated from usually credible sources - including sources who are usually antagonistic to each other - and has the merit of inherent plausibility. Kennedy was chasing Democratic nomination, remember? He claimed for a time at least, to be a Democrat.
I have also determined, based on material from the mainstream media, that Kennedy is a self-centered, empty-headed jerk.
He has found his place in history. Standing next to a sinking, stinking Trump. Who is the greater stain on whom, do you think?