So, what...U.S. should stop at around 62% upper marginal tax rate? There's a huge difference between 70% and the current U.S. marginal rate of 37% for over $50

So, what...U.S. should stop at around 62% upper marginal tax rate? There's a huge difference between 70% and the current U.S. marginal rate of 37% for over $500k. Argue homogeneity, small, relatively rich population all you want, we're talking about nearly double the tax rate!