eldavojohn writes "On September 14th a report titled 'Taxes and the Economy: An Economic Analysis of the Top Tax Rates Since 1945' (PDF) penned by the Library of Congress' nonpartisan Congressional Research Service was released to little fanfare. However, the following conclusion of the report has since roiled the GOP enough to have the report removed from the Library of Congress: 'The results of the analysis suggest that changes over the past 65 years in the top marginal tax rate and the top capital gains tax rate do not appear correlated with economic growth. The reduction in the top tax rates appears to be uncorrelated with saving, investment, and productivity growth. The top tax rates appear to have little or no relation to the size of the economic pie. However, the top tax rate reductions appear to be associated with the increasing concentration of income at the top of the income distribution. As measured by IRS data, the share of income accruing to the top 0.1% of U.S. families increased from 4.2% in 1945 to 12.3% by 2007 before falling to 9.2% due to the 2007-2009 recession. At the same time, the average tax rate paid by the top 0.1% fell from over 50% in 1945 to about 25% in 2009. Tax policy could have a relation to how the economic pie is sliced—lower top tax rates may be associated with greater income disparities.' From the New York Times article: 'The pressure applied to the research service comes amid a broader Republican effort to raise questions about research and statistics that were once trusted as nonpartisan and apolitical.' It appears to no longer be found on the Library of Congress' website."