 is pushing its own questions. The head of the Secret Service, Kimberly Cheadle, spoke on calls this week with lawmakers, but that has done little to appease the lawmakers. Wisconsin Republican Senator Ron Johnson told NPR he is asking many questions of his own. But we need to do oversight over their investigation. We should leave no stone unturned. In the end, the American public needs to know the full, gory, unvarnished truth of this spectacular security failure.