Waltenburg and Swinford provide a detailed and systematic examination of state government activity before the U.S. Supreme Court. They provide an explanatory model of state litigation behavior that both rests upon a solid theoretical perspective and places state decisions in a larger political context. After an examination of the evolution of U.S. constitutional law on issues of direct state concern, Waltenburg and Swinford focus most of their attention on qualitative and quanitative analyses of the behavior over time of states in all their roles before the Court. Scholars and other researchers interested in judicial decision-making, Constitutional Law, and inter-governmental relations will find this a particularly useful study.