I can’t speak for Jim, but I think he meant more the Trump-DeSantis and assorted pre-primary infighting. It tends to get pretty intense leading up to a general election primary season.
Just my guess, though.
Fine, but unify in supporting DeSantis?
Before I knew much about DeSantis, I thought he would be a great running mate for Trump.
I was WRONG!
I can’t “unify” behind DeSantis. I have unified behind Mitt Romney and John McCain. NEVER again.