WASHINGTON--While the Iraqi prisoner abuse scandal rages, yet another controversy is gathering steam, involving top U.S. accounting firms, powerful K Street lobbying firms and international oil companies widely held by institutional and individual investors. Senior congressional staffers, policy analysts and lobbyists are all pointing to mounting evidence that "utter chaos is reigning" in Baghdad over investigations into the Iraq oil-for-food program scandal, especially in the wake of today's raid by Iraqi police and U.S. forces on the home of Iraqi Governing Council member Ahmad al-Chalabi. The purpose of the raid was not disclosed, but Chalabi himself later told reporters that...