PHILADELPHIA, PA - OCTOBER 22:  A homeless couple sit in the street in downtown Philadelphia on October 22, 2014 in Philadelphia, Pennsylvania. One of the nation's largest and most historic metropolitan areas, Philadelphia has become the poorest big city in America. It also has the highest rate of deep poverty in America - those with incomes below half of the poverty line - of any of the nation's 10 largest cities. While much of downtown Philadelphia is vibrant with exceptional, restaurants, museums and nightlife, many areas immediately outside the center are mired in multi-generational deep poverty.  (Photo by Spencer Platt/Getty Images)