Washington ? In a chilling forecast, the White House is predicting a 10-year federal deficit of $9 trillion — more than the sum of all previous deficits since America’s founding. And it says by the next decade’s end the national debt will equal three-quarters of the entire U.S. economy.

But before President Barack Obama can do much about it, he’ll have to weather recession aftershocks including unemployment that his advisers said Tuesday is still heading for 10 percent.

Amid the gloomy numbers on Tuesday, Obama signaled his satisfaction with improvements in the economy by announcing he would nominate Republican Ben Bernanke to a second term as chairman of the Federal Reserve. The announcement, welcomed on Wall Street, diverted attention from the budget news and helped neutralize any disturbance in the financial markets from the high deficit projections.