And so we're being treated to the absurdity of conservative activist groups such as Americans for Prosperity -- whose sole purpose is to argue for cuts in government spending -- complaining about the practical effects of those very cuts on which they insisted.
Any realistic, practical plan to limit tax expenditure cuts to a high-income group would require a phase-in of the cuts or other accommodations, which would add to marginal tax rates, reduce the potential revenue gain, and make the resulting tax change more regressive.