A critical component of White House Scandal Defense 101 is rallying the partisan base. This keeps approval ratings in territory where the wheels don't start falling off. The way to achieve this goal is you go negative and you don't let up. If you're always attacking your accusers, the debate becomes one of Democrat vs. Republican, rather than right vs. wrong. Anyone who questions the legality of the decision to wiretap thousands of Americans unlawfully is attacked, as either an enabler of terrorists or a bitter partisan trying to distract a president at war.