"When we're not a party, we sometimes file as amicus, as friend of the court, 25, 30 times a term, sometimes more. And in each of those cases, we've got to decide what position the government's going to take. And that is the solicitor general's job to make that decision."
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Source : "Farewell to the General". "Amicus" with Dahlia Lithwick, www.slate.com. June 28, 2016.