McClellan and Clemens

When news of Roger Clemens "indiscretions" with an underage country music star came to light, some articles pointed out that Clemens' teammates were aware of his actions and that the unspoken rules of the clubhouse stipulated a gag order on the players' extracurricular activities. While I am not condoning such a policy, it is understandable and more important, does not cause harm to public at large. However, when members of our government engage in this sort of protective behavior, it does damage the public. Why is that so many members of the Bush administration, including George Tenet, John Ashcroft and now Scott McClellan, find it appropriate to voice their objections and concerns only after the fact? Is it some sort of fraternity house/gang mentality ("stop snitchin'" I believe is the vernacular)? I wonder what sort of information members of the government---employees of the people, mind you--are privy to, and what they keep from us. Would our voting habits differ? Would Kerry be president now if some of Bush's inner circle has spoken up sooner?
It would be refreshing to have actual people of integrity in office, people who believe their first loyalties are to the citizens of the country they serve, not their cronies and petty chieftains.