Overall, law professor Justin Driver divides interpretations of the Warren Court into three main groups: conservatives such as Robert Bork who attack the Court as "a legislator of policy...that was not theirs to make", liberals such as Morton Horwitz who strongly approve of the Court, and liberals such as Cass Sunstein who largely approve of the Court's overall legacy but believe that it went too far in making policy in some cases. Driver offers a fourth view, arguing that the Warren Court took overly conservative stances in such cases as "Powell v. Texas" and "Hoyt v. Florida".