Rush is a Bushie. Trump is an anti-Bushie, who, if he wins, is going to blow the Bush-Saudi connection sky high. I think Rush knows that.
I’m not saying that Rush hasn’t gotten some payola somewhere, because that wouldn’t surprise me a bit. But I also get the feeling his anti-Trump feelings are more personal than that.
Now that I think about it, seems like Rush turned radically against Trump after the debate where Trump really hammered Bush for 911 falling during Bush’s term.