The standard measurements all show the US economy doing well.  So how come so many Americans are doing so badly?  And can an economy live off by skimming the fat off the top, while down below, major cities are awash in people living in homelessness and hunger and small towns are fading away?  Financial journalist Nomi Prins, the author of Collusion: How Central Bankers Rigged the World sees signs of trouble ahead in America and in emerging markets like Turkey, Brazil and Mexico, and perhaps for the banks that invested there.