The Decline of Supreme Court Deference to the President, Trump edition

The graphic comes from the New York Times, based on data from a paper written by Lee Epstein and me, plus new data for Trump. The Trump data confirms the trend that we discovered in our (pre-Trump) paper: the decline in the win-rate for presidents before the Supreme Court since Reagan. The question is what accounts for it. Our two preferred hypotheses are the growth of the private Supreme Court bar, and an increase in the self-confidence of the Court. Will the trend continue after Trump’s next appointment?