Nearly sixty years ago, this Journal published a review of Walter J. Wagner’s comparative study of judiciaries in seven federal countries.1 Seeing that American federalism was not without its “blemishes,” the reviewer, P. Roger Peters, wrote that the United States “can and do[es] profit from the experience of other nations.”2 Wagner had extensively studied the federations of the time, including the USSR, Yugoslavia, Western Germany, and the Union of South Africa. Peters’s overall assessment of Wagner’s study was positive, and he welcomed the work as a positive contribution to comparative law.