The perpetual foreigner stereotype is a racist or xenophobic form of nativism in which naturalized and even native-born citizens (including families that have lived in a country for generations) are perceived by some members of the majority as foreign because they belong to a minority ethnic or racial group. Naturalization laws vary, and some countries follow a rule of jus sanguinis. Some countries have many refugees or other resident aliens. A diaspora such as the overseas Chinese is often regarded as belonging to their ancestral homeland rather than to the country in which they live.