Seeds of Disaster?

Robert Samuelson believes the chances of a budget crisis have been raised. An excerpt:

Let's be clear. A "budget crisis" is not some minor accounting exercise. It's a wrenching political, social and economic upheaval. Large deficits and rising debt -- the accumulation of past deficits -- spook investors, leading to higher interest rates on government loans. The higher rates expand the budget deficit and further unnerve investors. To reverse this calamitous cycle, the government has to cut spending deeply or raise taxes sharply. Lower spending and higher taxes in turn depress the economy and lead to higher unemployment. Not pretty.