Behind Frank Underwood's Medieval Senate Maneuver In 'House Of Cards'

Things get pretty wild in the Senate during Season 2 of "House Of Cards," which came out Friday on Netflix. If you haven't watched though the end of the third episode of the new season, consider this a fair warning that there are MAJOR SPOILERS below. If you have seen it and are wondering how Frank Underwood -- the calculating, murderous, newly minted vice president -- masterminded it, and whether his bizarre maneuvering is legal (short version: it is),