John McCain, Useful Idiot
They won't, of course; Schumer will stab him in the back the minute it's politically expedient. The Democrats play rough and they play to win; McCain is the perfect Useful Idiot, whom they're happy to embrace when he agrees with them in the name of "bipartisanship" and equally happy to savage when his usefulness is at an end.
But McCain's the only one not in on the joke. He's too busy calling far better men than he "wacko birds," and collaborating with the Left as part of the Gang of Eight, who seem to think it's perfectly okay for them to hammer out a "bipartisan" immigration deal and then present it to the rest of us as a fait accompli. So much for debate and deliberation.
If there's a better argument for term limits than John McCain -- at least on the nominally Republican side -- I can't imagine who it would be. First elected in 1986, McCain survived a primary challenge from former Congressman J.D. Hayworth in 2010, mostly by changing his positions on things like illegal immigration, in order to make himself appear to be more conservative than he actually is.
Alas, the Establishment rallied to his side, with the unhappy result that we now can't get rid of him until the election of 2016. "I consider myself a person who serves the people of Arizona to the best of his abilities," McCain said in his last campaign. If he really cared about the people of Arizona -- not to mention the people of America -- he'd do the honorable thing and resign before he can do any more damage to the country he professes to love.