Unlike McCain, I at least respect Lieberman. Lieberman will do what he thinks is right. McCain will do what he thinks is good for his own sorry punk ass.
I don’t agree with Lieberman on many things but he at least has integrity. The biggest problem with him is his age.
His age is an advantage in this case. He can come in for a couple of years until Russia blows over. Then Trump can appoint a young vigorous true-blue FBI Director who will serve for a decade.