The NYT has Inside the Supreme Court Ethics Debate: Who Judges the Justices? — In private meetings and memos, the justices made new rules for themselves — then split on whether they could, or should, be enforced.
To piece together the previously undisclosed debate, The Times interviewed people from inside and outside the court, including liberals and conservatives, who spoke on the condition of anonymity to discuss the proceedings and the justices’ thinking. This article also draws upon public statements by the justices, who declined to comment.