<Tr> <Th_colspan="2"> Major amendments </Th> </Tr> <Tr> <Td_colspan="2"> Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act of 2010 </Td> </Tr> <P> The American Recovery and Reinvestment Act of 2009 (ARRA) (Pub. L. 111--5), nicknamed the Recovery Act, was a stimulus package enacted by the 111th U.S. Congress and signed into law by President Barack Obama in February 2009 . Developed in response to the Great Recession, the ARRA's primary objective was to save existing jobs and create new ones as soon as possible . Other objectives were to provide temporary relief programs for those most affected by the recession and invest in infrastructure, education, health, and renewable energy . </P> <P> The approximate cost of the economic stimulus package was estimated to be $787 billion at the time of passage, later revised to $831 billion between 2009 and 2019 . The ARRA's rationale was based on the Keynesian economic theory that, during recessions, the government should offset the decrease in private spending with an increase in public spending in order to save jobs and stop further economic deterioration . </P>

When was the american recovery and reinvestment act passed