this is martin feldstein, professor of economics at harvard, chairman of the council of economic advisorsunder president reagan. this is what he said about cutting tax expenditures. cutting tax expenditures is really the best way to reduce government spending. eliminating tax expenditures does not increase marginal tax rates or reduce the reward for saving, investment, or risk taking. it would also increase overall economic efficiency by removing incentives that distort prieftd spending decisions, and eliminating or consolidatingthe large number of overlapping tax-based subsidies would also greatly simplify tax filing. in short, cutting tax expenditures is not at all like other ways of raising revenue. that from one of the most conservative economists in the country. mr. president, our colleagues on the other side say wait a minute, we shouldn't have revenues more than 18% of gross domestic product because that's on average what it's been over the last 30 or 40 years. mr. president, the problem with their analysis is the only times we've balanced the budget, the revenue has not been 18% o