As we and many others have chronicled, there’s a surfeit of reasons to strip Sen. Lieberman of his committee chairmanship. But one, perhaps the most obvious and substantive, has gone little mentioned. Simply put, he was terrible at it. Lieberman’s committee is the senate investigations and oversight committee, the senate’s counterpart to Rep. Henry Waxman’s committee in the House. And if you remember a lot about Waxman’s investigations and hearings and nothing about Lieberman’s, that’s because Lieberman didn’t hold any. Even in the face of endless scandals of the late Bush administration, Lieberman couldn’t find anything worth poking into.