Donating money to modify public thinking and government policy has now taken its place next to service-centered giving as a constructive branch of philanthropy. Many donors now view public-policy reform as a necessary adjunct to their efforts to improve lives directly. This is perhaps inevitable given the mushrooming presence of government in our lives. In 1930, just 12 percent of U.S. GDP was consumed by government; by 2012 that had tripled to 36...