pAs the economy continues to reel, a new report finds that 4 million American households lost economic security between 2000 and 2006, and that a majority of America’s middle class households are either borderline or at high risk of falling out of the middle class altogether. The new report, quot;From Middle to Shaky Ground: The Economic Decline of America’s Middle Class, 2000-2006quot; was published by the policy center Demos and the Institute for Assets and Social Policy (IASP) at Brandeis University./p