The Point: McCain's lasting Senate legacy? The 'thumbs down'

The Point: McCain's lasting Senate legacy? The 'thumbs down'
The death of Arizona Sen. John McCain has occasioned a number of heartfelt tributes as the nation pays homage to a man who sacrificed much for this country. But how will McCain be remembered in the Senate, the place where he spent the final 30+ years of his life? And how do his legislative accomplishments rank against the list of our greatest senators?