There is a scandal in Mitt Romney's campaign -- namely Glenn Hubbard, Romney's chief economic advisor, who was chairman of the Council of Economic Advisors under George W. Bush, and is now Dean of Columbia Business School. First, Hubbard has an abysmal track record in economic policy, including the very issues that Romney has made the pillar of his presidential campaign. Second, like Romney, Hubbard refuses to disclose critical information about his income, conflicts of interest, and paid advocacy activities. Third, both in public statements and in my personal experience, Hubbard has been evasive, misleading, and even dishonest when discussing both policy issues and his own conflicts of interest. And last but not least, those conflicts of interest are huge: Hubbard has long advocated policies that Wall Street loves, often without disclosing that he is, in fact, highly paid by Wall Street.