Focusing on five Los Angeles environmental policy debates between 1920 and 1950, Sarah Elkind investigates how practices in American municipal government gave business groups political legitimacy at the local level as well as unanticipated influence over federal politics.

Los Angeles's struggles with oil drilling, air pollution, flooding, and water and power supplies expose the clout business has had over government. Revealing the huge disparities between big business groups and individual community members in power, influence, and the ability to participate in policy debates, Elkind...