case miss sen. harry reid r-nv announce last week retire current term expire early 2017 say regret take senate floor 2012 accuse then-gop presidential nominee mitt romney pay tax regret tell cnn dana bash koch brothers one would help afraid koch brothers would go bash say view charge mccarthy-ite reid buy explanation shrug say call whatever want romney win reid say somewhat amusingly watch dirty harry reid lie romney tax win