"number" on the internet: recovery.gov. The ARRA (American Recovery and Reinvestment Act of 2009) requires the Chairperson of the Council of Economic Advisors to submit quarterly reports to the House and Senate Appropriations committees to include the impact of the funds expended, estimated economic growth and other indicators of economic impacts. Alan Krueger is the current Chairman of the Council of Economic Advisors and since assuming that role (which is appointed by the President and confirmed by the Senate) on November 3, 2011, he has failed to submit a single report to either body as is required by law. Austan Goolesbee was the former chairman from September 2010 to August 2011 (remember him?) and he was the last to submit one of these reports for the period ending on June 30, 2011.
As Jeffrey Anderson posits over in The Weekly Standard, it is entirely possible that these reports stopped because people (including your Gormogons) were using the data from the reports to demonstrate what a huge waste the (with props to 'Puter, who is always right) Giant Pork-fill Technicolor Stimulus Bill was and is.
Of course, the administration will repeatedly say that the Stimulus is a success and continues to work. It's too bad they can't follow their own laws.
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