In his new book, The Housing Policy Revolution: Networks and Neighborhoods, David Erickson shows how the construction of affordable housing has moved away from the federal government towards a network of state and local governments, nonprofits and grassroots organizations, the private sector, labor unions, foundations, and churches. Each of the nodes of the network brings its own expertise and resources to the table. Banks, for example, provide loans and capital through their CRA-motivated loans and investments. Foundations often provide funding for research and development, backing pilots and demonstration projects that can help to illuminate what types of housing strategies best support lowerincome households.