I don’t have sources and am pressed for time, but I’d like to get the discussion started. This topic is near-and-dear to me. The answer is: 1 in 8 years. Obama’s detractors will say that he had 13 overturned. But: - 9 of the 13 actually began under the administration of George W. Bush, although the subsequent Justice Department handled the appellate process for those cases. - 3 of the 13 had nothing to do with Executive Orders. In one case, the Obama administration wasn’t even a plaintiff or a defendant; the Justice Department merely filed a brief supporting a Massachusetts law being challenged. - the whopping total of 1 of 13 is a well-reported and documented immigration order. I believe it ended with a 4–4 tie at the Supreme Court.