Arizona should demand that McCain step down...he’s clearly lost it and us unfit to serve.
McCain is one of the nastiest men ever to serve in the Senate. Arizona, at least some of it, is ashamed and has been for a long time. The problem is that there are so many former military in the state who will vote for any military man. Remember that stupid moron you served under who couldn’t get a job on the outside? The REMF? The cook who stole from the galley? The First Sergeant who was so hung over he couldn’t function before 11AM? etc., etc. Well, they all live in Arizona and vote McCain.
Nothing Arizona can do constitutionally. They (and us) are stuck with him until 2020 (or sooner depending on what happens to him). The only options are sanction and removal from the Senate by his "colleagues". And that ain't gonna happen.