..... he is either unrealistic or believes he has more power than he actually has....
Unless he has an ace in the hole.....
I think he has two such cards. Lindsey Grahm and Joe Liberman. I think that the Senate can be run by McCain, Liberman and Grahm. They can gather enough bipartisen votes to pass or grind things to halt. Both have apppeared with him on several occassions. They are there for a reason.