Investigate, why? Holder said he did not do anything wrong...he did not even admit to an error in management. That was underscored by der leader who said he has total confidence in Holder while also noting he had no knowledge of this matter. OK, that proves there is nothing here...move on to something else...oh, what was it Cain did during the civil rights movement and why did he not join the military during the Vietnam War?
In my experience, when the boss (in this case Obama) uses these words, look for a new job quickly!