A broader tax base that closes loopholes would raise more money than plans by Ocasio-Cortez and Warren. Lawrence Summers, March 28, 2019, Opinion, “Tax reform debates have been transformed in recent weeks by a shift in emphasis from revenue raising and progressivity to an emphasis on going after the rich for the sake of equality and justice. Bold proposals from Representative Alexandria Ocasio-Cortez of New York, for a 70 percent marginal tax rate on top earners, and from Senator Elizabeth Warren of Massachusetts — a 2020 Democratic presidential candidate — for a wealth tax on those worth more than $50 million have attracted widespread attention.Link