In this policy analysis, we explain the difference between policy-based evidence (PBE) and evidence-based policy (EBP). We argue that better, evidence-based understanding, explanations, and questions can be sought by problematizing the challenging forms of twenty-first century migration and mobilities. We emphasize that this can be done by not confusing PBE with EBP, especially when each is needed as a basis for specific types of action. By focusing on topics often viewed as “unrelated” or confused with one another, we underline the social dynamics that are unfamiliar to many policy actors, professionals, and stakeholders, who rely on scholars for actionable analyses. Our mode of inquiry is based on nexus analysis, and it contrasts and problematizes our recent studies, research in progress related to distinct types of mobilities and migration. The article draws on four disciplines and a more diverse set of perspectives than is the norm in Finland. Because of this, we are able to articulate better the relationship between contemporary migration challenges in Finland and present better policy questions that the mobilities paradigm brings into view.