Princeton economic professor Paul Krugman told ABC's Good Morning America that the U.S. economy could afford up to $10 trillion in stimulus programs.

"How much money can the government spend in rescuing the economy? The answer is alot. It's not unlimited. You know, a trillion here, a trillion there and soon you're talking about real money. Advanced countries with stable governments -- which is us -- can borrow up to 100% more than that of GDP and you work that out and we probably have $10 trillion of running room if we have to use it. I don't want to get there but we've got a long ways to go."

This video is from ABC's Good Morning America, broadcast Dec. 2, 2008.

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