The president's top economic advisor, Christina Romer,defended the administration's proposed spending blueprint, arguing that future economic growth will be more vibrant than the CBO assumes.

VOA: standard.2009.03.22

Mr Ryan's roadmap takes as its starting point the CBO's long-term budget forecast.

ECONOMIST: The Republicans' economic plans: Ryan to the rescue? | The

The CBO's analysis suggests that the federal deficit will be slashed by well over a trillion dollars over the next two decades by this reform.

ECONOMIST: Health reform in America

The CBO's latest Long-Term Outlook in June estimated that total tax revenues would have to double by mid-century in order to finance our current spending path.

WSJ: Paul Ryan: Where's Your Budget, Mr. President?