Benzinga's Political Roundup (HUM, UNH, MCO)

The U.S. has expanded their probe into the Allen Stanford case. The U.S. tax deal has cleared its first hurdle in Congress, despite the potential for a ratings downgrade from Moody's MCO. The World Trade Organization sided with the U.S. over China in a tire dispute. Yesterday, a Virginia court struck down parts of Obamacare as being unconstitutional. The judge said that it wasn't legal to force people to buy insurance, which hurt insurance stocks like Humana HUM and United Health UNH