Arguments about the harmful effects of government intervention in welfare issues, which seemed peripheral to the rapid expansion of state welfare in the twentieth century, have recently achieved the status of a new orthodoxy. This article examines the historical development of economic, administrative and ideological criticisms of state welfare in Britain and America, in order to identify the roots of this new orthodoxy. It finds that economic and administrative criticisms are neither necessary nor sufficient to explain the rise of this new view, which ultimately rests on specific ideological beliefs about the propriety of state welfare.