In this chapter, the author provides a detailed critical analysis of mainland maternity migration to Hong Kong. Domopolitics and the managers of unease tap into homeland nationalist fears and anxieties by targeting not only non-citizen immigrants, but also citizens exteriorised from the homeland nation as racial, ethnic and sexual minorities, as well as "alien" and "accidental" citizens and birthright citizenship more generally. The ways in which homeland nationalists target maternity migration and birthright citizenship highlights how reproduction is central to contemporary biopolitics, something that the domopolitics literature to date-with its emphasis on the citizen/non-citizen divide-has largely overlooked. Babies born to immigrant parents who have not yet received citizenship or permanent resident status are the frequent targets of homeland nationalists, nativists and xenophobes. At the beginning of the 2000s, few concerns were raised by Hong Kong’s population policy experts about mainland maternity migration.