This monograph lays out a discussion framework for understanding the role of human-computer interaction (HCI) in public policymaking. It takes an international view, discussing potential areas for research and application and their potential for impact. The aim is to provide a solid foundation for discussion, cooperation and collaborative interaction, and to outline future programs of activity. It starts with an introduction to HCI and public policy and goes on to discuss how HCI research and practices already inform public policy, providing representative examples. It then discusses how public policy influences HCI and provides representative public policy areas that are relevant to HCI, and where HCI could have even more impact in the future. It concludes by laying out a framework for involvement and suggested actions by the HCI community in public policy internationally. This monograph summarizes the observations and recommendations from a daylong workshop at the CHI 2013 conference in Paris, France. The workshop invited the community's perspectives regarding the intersection of governmental policies, international and domestic standards, recent HCI research discoveries, and emergent considerations and challenges. It also incorporates contributions made after the workshop by workshop participants and by individuals who were unable to participate in the workshop but whose work and interests were highly related and relevant.