The passage of the Public Utilities Holding Company Act was the climax to the thirty-year nationwide fight between public vs. private development of electricity in the United States. Other societal issues like the postal service, public roads, schools, social security, national health insurance, and public ownership of electric generation were part of a global phenomenon with most of Europe and regions of the United States in support of mixed economies. The National Electric Light Association and its member companies organized the largest U.S. Public Relations campaign of the 1920s. The campaign had two goals: to stigmatize public ownership on the one hand while promoting the rapid consolidation of the private sector into a few giant multi-tiered holding companies. The nearly 2,000 cities that had public systems, led by Nebraska Senator George W. Norris, Montana Senator Thomas J. Walsh and Pennsylvania Governor Gifford Pinchot were able to pass the 1928 Senate Resolution 83 which directed the Federal Trade Commission to conduct a detailed investigation of the industry's finances and propaganda war waged against publicly owned utilities. That Seven-year investigation took on special meaning following the Wall Street Crash of 1929 as the early phase of the investigation showed large scale corruption hidden within the six to ten layered pyramid holding company structures that concentrated financial power in the hands of a few.