Feldstein, adviser to the Romney campaign, refutes the assertion based on computer models that the Romney Tax Plan of a 20% across the board cut in taxes cannot be paid for by limiting the deductions of high income tax earners. His own analysis based on IRS data, shows taxpayers with adjusted gross incomes of over $100,000 made itemized deductions of $636 billion in 2009. By taxing these deductions at a 30% marginal rate, additional revenue of $191 billion can be raised to pay for the Romney Tax Plan's static revenue loss of $181 billion. A smaller revenue loss of $148 billion is predicted based on increased incomes and taxes from the behavioural effects of lower taxes on earners. He says this was the thinking behind the Reagan tax cuts of 1986 and the Simpson-Bowles commission plan that would generate economic growth by reforming the tax system's distortions.