As former House Speaker Dennis Hastert prepares to plead guilty in accordance with a deal he has made with federal prosecutors, most media will focus on the crimes the FBI mentioned in his indictment. Since Hastert was charged in May, the public has been shocked to learn that the former high-school wrestling coach allegedly spent large sums trying to cover up past sexual abuse. But one prominent whistleblower has been speaking up about the possible misdeeds of Hastert for years now - and the way that they may have compromised national security.