When they booked Rush they probably thought Rubio would have won 5 states by now and that Rush not Marcobot could present Rubio’s case better than Rubiot.
Rush is one of the few who can critic Trump and not seem like a paid shill or bimbo.
Rush’s contract is up for renewal this year. He will do whatever the establishment tells him to do until the new contract is in place. Probably a couple of million extra per year if he helps take down Trump and declares Paul Ryan a rock-ribbed conservative after the contested convention.
I remember what Rush did to Newt, right before the Florida primary... Rush is just another shark... Getting amnesty talking points from the likes of Schumer and Graham has exposed Rush's lack conservatism. I think Rush has Trump envy.