This paper explores the 'issue-oriented' perspective on public involvement in politics opened up by recent research in Science and Technology Studies (STS). This research proposes that public controversy around techno-scientific issues is dedicated to the articulation of these issues and their eventual accommodation in society. It does not, however, fully answer the question of why issue formation should be appreciated as a crucial dimension of democratic politics. To address this question, I turn to the work of two early 20th-century American pragmatists: John Dewey and Walter Lippmann. In their work on democracy in industrial society, they conceived of public involvement in politics as being occasioned by, and providing a way to settle, controversies that existing institutions were unable to resolve. Moreover, Dewey developed a 'socio-ontological' understanding of issues, which suggests that people's involvement in politics is mediated by problems that affect them. Dewey and Lippmann thus provide important argumentative resources for further elaborating the approach to public involvement developed in STS. STS research has also developed a 'socio-ontological' approach, as it focuses on the 'attachments' that people mobilize (and that mobilize people) in the performance of their concern with public affairs. Such an approach provides an alternative to discursivist analysis of the role of 'issue framing' in the involvement of publics in politics.