IRS SCANDALS: The Missing Koch Report: Treasury won’t let the conservative donors see the results of an inspector general’s investigation. “In late September 2010, Iowa senator Chuck Grassley and six of his colleagues grew suspicious that a senior Obama administration official had improperly accessed the tax information of industrial behemoth Koch Industries. After Austan Goolsbee, then-chairman of the president’s Council of Economic Advisers, made an erroneous statement that implied direct knowledge of the company’s confidential tax status, the senators demanded that the Treasury Department inspector general for tax administration (TIGTA) investigate. Now, more than two years since the completion of that investigation, and despite repeated requests from Koch Industries and Senator Grassley himself, the results have yet to see the light of day.”