David,

CBPP is definitely of a liberal bent. Concord Coalition, however, is bi/non-partisan. One of the founders, along with Paul Tsongas, is Warren Rudman, of the DOA Gramm-Rudman-Hollings Balance Budget Act. Seeing balanced budgets, a solvent Social Security and distaste for tax cut du jour as 'liberal' I believe is a commentary on how far afield we've gotten in the last 25 years of not-so-conservative fiscal policy. But all this is really another thread for another board and if I had saved any of hundreds I've been involved with, I'd simply answer with "Argument 4a" and be done with it.