It has some surprising members:
Rep. Alexandria Ocasio-Cortez has been promoting the idea of a 70 percent top marginal tax rate, and Paul Krugman has been defending it. Matthew Yglesias of Vox has written that 70 percent might be too low.
Here is my full Bloomberg column on the topic. You will note by the way that if you only apply the tax on say $10 million and up, it will all be converted into capital income and the tax will distort without raising much revenue. And here is a sentence toward the end of the piece, part of my advice for Democrats:
Recognize that you’ll never be that popular on the tax issue.
I see this as a kind of catnip issue, one where the Democratic Left is so, so tempted to make redistribution the central idea of the party, a disastrous urge in my view.