White House Budget Director Peter Orszag is arguing that the Congressional Budget Office (CBO) underestimates the savings from President Barack Obama's healthcare bill. CBO, the independent agency Orszag ran before he joined the Obama administration, said the legislation will reduce deficits $143 billion in its first decade and by even more -- roughly 0.25 percent to 0.5 percent of gross domestic product -- in its second decade. That would probably amount to more than $1 trillion in savings, but Orszag considers that a lowball estimate.