But it's both, isn't it? Fewer Americans have health coverage, fewer Americans have jobs, fewer Americans can stay in homes. What you hear people saying is that #1 implies #2.
http://research.stlouisfed.org/fred2/series/USHOWN
http://en.wikipedia.org/wiki/File:U.S._Uninsured_and_Uninsur...
But showing the data that the top has increased their % share of the wealth does not prove that.