David Frum feels that Jon Huntsman's endorsement of the Ryan plan is a mistake:
The Ryan plan answers a narrow Republican concern: how do we push taxes even lower in the face of the impending retirement of the baby boom). It disregards the broader national concern: how can we sustain and enhance the standard of living of the American middle class against the downward trend in middle-class incomes of the past dozen years? The Ryan plan tragically abdicates this question.
Romney, meanwhile, is aping Pawlenty's tax plan.
The Dish 