One out of four homeowners is now under water, owing more on their homes than the homes are worth. Why? The biggest single factor behind the housing crisis is rising unemployment. According to the latest ABC-Washington Post poll, one out of every three Americans has either lost their job or lives in a household with someone who has lost a job. Today it takes two and sometimes three incomes to buy the groceries and pay the mortgage or the rent. So if one of those incomes is gone, a homeowner can't make the payment. The scourge of unemployment is splitting America into three groups: (1) the third just mentioned, whose households are in danger of losing their homes and whose kids are surviving on food stamps (that's up to one in four children in America today); (2) the vast majority of Americans who are managing but worried about keeping their jobs and homes; and (3) a small number who are taking home even more winnings than they did in the boom year 2007. Prominent among category (3) are Wall Street bankers, many of whom are now concluding their most profitable year ever. Goldman Sachs is so flush that it's preparing to give out bonuses in a few weeks totaling $17 billion. That will mean eight-figure compensation packages for lots of Goldman executives and traders. JPMorgan Chase is rumored to have a bonus pool of around $5 billion. The three other major Wall Street banks are ratcheting up their compensation packages so their "talent" won't be poached by Goldman or JPMorgan. Wall Street is booming again in large part because the rest of America -- categories (1) and (2), above -- bailed it out to the tune of $700 billion last year. The Street has repaid some of that but, according to the bailout program's inspector general, much of it is gone forever. For example, the taxpayer money that bailed out giant insurer AIG went directly through AIG to its "counterparties" like Goldman Sachs -- to whom Tim Geithner, according to the inspector general, gave away the store. As Goldman Sachs prepares to dole out some $17 billion to its executives and traders, it's worth noting that Goldman received $13 billion a year ago from the rest of us via AIG and Geithner, no strings attached. More after the jump. --Robert Reich