Absolute amounts are not very useful for making tax policy. If it represents a tiny portion of federal receipts, and doesn’t serve to prevent some end-run aroun

Absolute amounts are not very useful for making tax policy. If it represents a tiny portion of federal receipts, and doesn’t serve to prevent some end-run around other parts of the tax law or other perverse incentives, there seems to be a weak case for maintaining a tax policy that causes all sorts of other undesirable outcomes.