Scholars in the history and sociology of engineering in the United States have commented critically on the unwillingness of twentieth century engineers to participate actively in politics. Alfred Chandler, for example, has noted the absence of engineers in Progressive Era reform movements, while Edwin T. Layton Jr has criticized engineers in the 1920s for an excessive focus on sterile status seeking. This perceived lack of twentieth century engineering activism is especially puzzling given that nineteenth-century American engineers and engineering societies did not hesitate to lobby openly for clean water, smoke abatement, municipal reform, and numerous other issues.