Today, the damage from the global mortgage meltdown has more than matched that of the savings-and-loan bailouts of the 1980s and early 1990s. By some estimates, it has made that costly debacle look like chump change. But it's also clear that the FBI failed to avert a problem it had accurately forecast.

Banks and brokerages have written down more than $300 billion of mortgage-backed securities and other risky investments in the last year or so as homeowner defaults leaped and weakness in the real estate market spread.

In California alone, lenders have foreclosed on $100 billion worth of homes over the last two years and are foreclosing at a rate of 1,300 houses every business day, according to a recent report from ForeclosureRadar.com.

Most observers have declared the mess a gross failure of regulation. To be sure, in the run-up to the crisis, market-oriented federal regulators bragged about their hands-off treatment of banks and other savings institutions and their executives. But it wasn't just regulators who were looking the other way. The FBI and its parent agency, the Justice Department, are supposed to act as the cops on the beat for potentially illegal activities by bankers and others. But they were focused on national security and other priorities, and paid scant attention to white-collar crimes that may have contributed to the lending and securities debacle.

Now that the problems are out in the open, the government's response strikes some veteran regulators as too little, too late.