Taiwan holds the Asian record for the proportion of families that involve so-called 'foreign brides'. Marriage migration has brought close to half a million immigrant spouses into the country over the past decades. Most of these women come from Mainland China, Vietnam, Indonesia and the Philippines. This paper discusses how the Taiwanese state and society have actively pursued the integration of immigrant spouses since 2002, with a set of policies that acknowledge the massive migration of 'foreign brides' and the impact of this phenomenon on society. It argues that the attempt to integrate new immigrants is fraught with a discourse that serves to further stigmatize these women, discriminate against them, and, therefore, create an 'Other' that is used to erect the ideology of nation-building in Taiwan. The paper provides a critical analysis of policies, academic discourse and NGOs fundraising strategies to show how these institutions reinforce the idea that immigrant spouses are problematic and, therefore, need to be 'Taiwanized'. This results in a system of differential legal and social citizenship in which immigrant spouses are at the bottom of the social hierarchy in Taiwanese society.