This is a report of the proceedings of Senate hearings on urban neighborhood diversity. Witnesses at the hearings included politicians and policy makers from various American cities. Statements from a number of individuals and committee discussion on the materials presented are included. Additional statements and data pertinent to trends in urban communities are also provided. Among the issues addressed are demographic, economic, ethnic, and administrative problems in American cities. The concerns of individual city dwellers and urban property owners are expressed. Renovation, renewal, and development in the nation's cities are themes which recurred throughout the testimony and data at the hearings. A number of charts and tables supplement information presented. (GC)