strengthening congressional leadership, but that case must rest on grounds other than the alleged defects of the separation of powers. Many of the supporters of a strong presidency have finally acknowledged that party government--for decades their rallying cry--will not serve their ends. And so they have turned to a different means--constitutional amendment. But it is a more risky strategy. We could learn from experience about the role of parties without having to make fundamental changes in the regime. To learn from experience about constitutional "reform," we will have to take a precipitous leap into the dark.