Government Accounting Office Report, GAO-11-485 (April 2011)

(technical report notes that at least 3,700 contract and grant recipients (about five percent of total) of tax dollars doled out by the American Recovery and Reinvestment Act of 2009 (which had been touted by partisan, Keynesian economists as necessary to stimulate the economy) were estimated to owe more than $750 million in unpaid federal taxes as of 9/30/2009; $750 million amount likely understated because IRS does not retain information on amounts owed by recipients who have not filed returns or understated their taxable income and for which IRS has not assessed tax amounts due; a single engineering firm that received $100,000 had $6 million in delinquent taxes).