Joe Stiglitz refused to sign the letter from former members of the CEA calling for deficit reduction:
Why I didn't sign deficit letter, by Joseph E. Stiglitz: I was asked to sign the letter from a bipartisan group of former chairmen and chairwomen of the Council of Economic Advisers that stresses the importance of deficit reduction and urges the use of the Bowles Simpson Deficit Commission’s recommendations as the basis for compromise. ... I did not sign.
I believe the Bowles Simpson recommendations represent, to too large an extent, a set of unprincipled political compromises that would lead to a weaker America — with slower growth and a more divided society.
Deficit reduction is important. But it is a means to an end — not an end in itself. We need to think about what kind of economy, and what kind of society, we want to create; and how tax and expenditure programs can help achieve those goals.
Bowles-Simpson confuses means with ends, and would take us off in directions which would likely be counterproductive. Fortunately, there are alternatives that could do more for deficit reduction, more for putting America back to work now and more for creating the kind of economy and society we should be striving for in the future.
There's quite a bit more in the link.