As the sorry tale of the S&L crisis suggests, the road to financial hell is sometimes paved with good intentions. There was nothing malign in attempting to keep these institutions solvent and profitable; they were of long standing, and it seemed a noble exercise to preserve them. Perhaps even more noble, and with consequences that have already proved much more threatening, was the philosophy that would eventually lead the United States into its latest financial crisis—a crisis that begins, and ends, with mortgages.
A mortgage used to stay on the books of the issuing bank until it was paid off, often twenty or thirty years later. This greatly limited the number of mortgages a bank could initiate. In 1938, as part of the New Deal, the federal government established the Federal National Mortgage Association, nicknamed Fannie Mae, to help provide liquidity to the mortgage market.