The vise on the middle class tightened last year, driving down its share of the income pie as the number of Americans in poverty leveled off and the most affluent households saw their portion grow, new census data released Wednesday showed.

www.washingtonpost.com/business/economy/poverty-was-flat-in-2011-percentage-without-health-insurance-fell/2012/09/12/0e04632c-fc29-11e1-8adc-499661afe377_story.html