The strategically ambiguous George W. Bush
It depends on what the meaning of "is" is, or rather in this case on the meaning of "weapons" of mass destructions vs. "weapons programs." This clear distinction is the basis of Bush's exaggeration/lie about evidence of WMD in Iraq. I hate to once again bring out a cliché, but if Bill Clinton had done this, the right-wingers would be calling him a murder of around 200 US military service members. Bush gets a pass from his flock. The media is starting to come around on this point, but will they keep up the pressure? This is more than enough for any President to be pushed out of office, but that is in terms of a non-media saturated culture. This is enough for him to lose next year. Will the media allow it to be used by the Democrats? I wonder how the beast will handle it. I have hope, but having been a sap on WMD before makes me übercynical on the media having balls.