clipped from www.cbsnews.com

When the stock market soars or plunges, everyone pays attention. But short term results aren't that important to the man you're about to meet. David Walker thinks the biggest economic peril facing the nation is being ignored, and for nearly two years now he has been traveling the country like an Old Testament prophet, urging people to wake up before its too late. Who is David Walker and why should we care?

As correspondent Steve Kroft first reported earlier this year, he is the nation's top accountant, the comptroller general of the United States. He's totaled up our government's income, liabilities, and future obligations and concluded that our current standard of living is unsustainable unless some drastic action is taken. And he's not alone. It's been called the "dirty little secret everyone in Washington knows" – a set of financial truths so inconvenient that most elected officials don't even want to talk about them, which is exactly why David Walker does.