Credit crisis expands, hitting all kinds of consumer loans

McClatchy reports:

At the heart of the nation's lending boom from 1996 to 2006 was a process called securitization. In housing, this process involved pooling mortgages for sale to investors as special bonds called mortgage-backed securities. Monthly mortgage payments were also pooled and served as the return to investors.

Securitization meant that most home loans no longer sat on a bank's balance sheet. Instead, they were sold into a secondary market, where they were sliced and diced in a process that was supposed to spread investment risk a mile wide and an inch deep.

For every dollar of mortgage loans that banks kept on their balance sheets since 2000, another $7 of these loans were sold to the secondary market and securitized. This led to the industry joke that "a rolling loan gathered no loss." Risk was passed along to the next holder of the debt. Securitization added what bankers call liquidity, a fancy term for having more money on hand to lend.

Now, the structured finance that enabled Americans to borrow cheaply has gone away, at least in the housing market.