The top numbers cruncher for Congress warned Thursday that the federal government increasingly risks sending the country into a "fiscal crisis," projecting that unless cuts are made, within a decade the national debt could reach nearly 100 percent of all annual economic activity.

That's like having $50,000 in debt on a $50,000-a-year salary.

Congressional Budget Office Director Douglas Elmendorf, on the heels of a report pegging the 2011 budget deficit at a record $1.5 trillion, testified before the Senate Budget Committee on the risks of inaction. He said cumulative deficits over the next 10 years could run anywhere from $7 trillion to $12 trillion...