Saturday evening's White House Correspondents' Association Dinner and related events are just what the doctor didn't order for ailing institutions in the nation's capital -- the news media, and particularly the Washington press corps; Congress and the administration. Yet the beat goes on, and the parties who should be most concerned seem oblivious to the ways in which this reinforces the negative imagery that hovers over and around them. And it's simply another story about the seductive power of money . . .