if Ben Stein is right that people who are worried about the subprime mortgage crisis are being "chicken little," then there will be plenty of clucking going on following yesterday's announcement from Capital One Financial Corp.(NYSE: COF) that it was shutting down its GreenPoint mortgage unit.

As the Wall Street Journal (subscription required) points out, Capital One bought this business as part of its $13.2 billion acquisition of GreenPoint Financial Corp. The company now is shutting 31 locations, firing 1,900 workers and taking a charge of $860 million, or $2.15 per share. To top it off, Capital One is slashing its 2007 guidance by $5 a share.

What's scary is that GreenPoint didn't even sell subprime mortgages. It sold loans to people who lacked sufficient documentation to qualify for the best rates.

When the dust clears, it will show that the real estate boom was fueled by rampant mortgage fraud. People got loans that they couldn't afford and are now paying the price. Congress needs to take action to make sure this doesn't happen again.

It's only a matter of time for the next shoe to drop.