This paper draws upon the theoretical literature on migration policy and health, and empirical data on three European states with differing welfare models - Sweden (social democrat), France (conservative), and the United Kingdom (liberal) - during Covid-19, to highlight the often hidden and contradictory politics through which refugees, asylum seekers, and undocumented migrants were forced to navigate during the most uncertain period of the pandemic. Although migrants' treatment during Covid-19 was generally better in Sweden with a social democrat welfare tradition, we see migration management priorities greatly undermining the extent to which welfare systems function overall for the benefit of population health. Furthermore, Sweden's recent political shift to the right exacerbates those negative tendencies. As the paper shows, there was considerable effort by civil society and local government to fill the gap where national governments failed to protect this group, stepping in to provide health information, and support.