Trump should have only one goal in mind here. And it’s not to trade accusations with RFK Jr. It’s how to handle him such that he (RFK Jr) draws more votes from Biden than from Trump.
Perhaps Trump could slyly label RFK Jr as the true successor to FDR and JFK. Biden is a fraud. RFK Jr is the real deal.
Vote for RFK Jr, traditional Democrats!
Trump should just come out and promise to appoint RFK to be the “crisis management czar” in a second Trump administration. The end.