American governance is burdened by a paradox. On the one hand, Americans don't want "big government" meddling in their lives; on the other hand, they have repeatedly enlisted governmental help to impose their views regarding marriage, abortion, religion, and schooling on their neighbors. These contradictory stances on the role of public power have paralyzed policymaking and generated rancorous disputes about government's legitimate scope. How did we reach this political impasse? Historian Gary Gerstle, looking at two hundred years of U.S. history, argues that the roots of the current...