We the People fills in the details that Beard had overlooked in his fragmentary book. MacDonald's work is based on an exhaustive comparative examination of the economic biographies of the 55 members of the Constitutional Convention and the 1,750 members of the state ratifying conventions. His conclusion is that on the basis of evidence, Beard's economic interpretation does not hold. McDonald demonstrates conclusively that the interplay of conditioning or determining factors at work in the making of the Constitution was extremely complex and cannot be rendered intelligible in terms of any single system of interpretation.
McDonald's classic work, while never denying economic motivation as a factor, also demonstrates how the rich cultural and political mosaic of the colonies was an independent and dominant factor in the decision making that led to the first new nation. In its pluralistic approach to economic factors and analytic richness, We the People is both a major work of American history and a significant document in the history of ideas. It continues to be an essential volume for historians, political scientists, economists, and American studies specialists.