Leonhardt did not have figures for 2010 , and there were several refundable tax credits which were created or expanded between 2006 and 2010 .
As of 2006 , according to New York Times columnist David Leonhardt , approximately 10 % of Americans paid no net federal taxes .
columnist did not have figures for 2010 , and there were several refundable tax credits which were created or expanded between 2006 and 2010 .
As of 2006 , according to New York Times columnist David Leonhardt , approximately 10 % of Americans paid no net federal taxes .