 I wrote this law review article in 2014. It was called The Trouble with Amicus Facts. And it cataloged different sorts of errors amicus briefs make. But the one that I think has gotten the most attention was an abortion case from 2007, I believe, called Gonzalez v. Carhart. And Justice Kennedy cited an amicus brief for the factual claim that although he says there's no reliable data, women tend to regret their abortions.