Both of these guys, need to back off.
They don’t need to go after each other.
As they say: All's FAIR IN LOVE & POLITICS.
Politics as Rush as said, (many, many, many a time ) is for the ugly.
Rush has also said that the candidates should go after the democRATS, and leave fellow Republicans alone, for what that's worth.
As the candidates get close to the election(s) for the nomination, obviously the Vision of Glory is blinding them, i.e., the start of going after Republican(s) rivals.