It is Senator McCain who is shameful.
He (and a few others) are responsible for one of the most dangerous pieces of legislation to be passed in decades. He sponsored, and fought for, an amendment to the Defense Appropriations bill a few years ago that now makes it "legal" for the administration to use the military inside the United States to snatch up an American citizen, without a warrant, and hold them incommunicado for up to 6 months, while investigating them for terrorrism! Kiss off habeus corpus, kiss off probable cause, kiss off posse comitatus, kiss off the right to an attorney, kiss off the right to a speedy trial, kiss off the right to confront your accuser, etc., etc.
McCain is one of the most disgusting excuses for a representative that I've seen in a long time. When he ran against Obama it really was a case of chosing this evil or that evil. A wanna-be dictator from the left vs a wanna-be dictator from the right. It made it easier to vote Libertarian.