Ricard Nixon left office because he bugged an office or two and was just an all-around asshole.
Bill Clinton was nearly removed from office simply because he chose the wrong mouth in which to place his dick.
And on November 8th 2006, George "You're doing a heckuva job Brownie" Bush will be sitting on Trent Lott's new porch in Mississippi drinking mint juleps. He'll be amazed (just a little though) at how the Republicans kept control of Congress and his approval rating rebounded after the Category 5 fuck-up that was Katrina.
Oh, and the mint julep will be a virgin mint julep.
God bless America.