It's all part of the uniparty, the monoparty, one party rule.
McCain is one of the architects of single party rule. Graham, McConnell, are all with him.
The ultimate goal of all these weasels is to get the American people out of politics altogether. These smug elitist A-holes believe that they are the 'ruling class'. And that they are not responsible to anyone except themselves.
Why they keep getting elected is because that is how they have set the system up. It is almost impossible to run against them, and win.
They know it. They built it. And they love it.
When you give the employees the ability to set up their own positions, and to vote themselves raises twice a year, this is what you get. There is no controlling authority. All the pretend 'controlling' constructs are all controlled by the people that they are supposed to watch.