Who is main policy was supported by nativism?

The main policy supported by nativism is typically anti-Immigration sentiment, which promotes the interests of native-born or established inhabitants over those of immigrants. Nativists often advocate for stricter immigration laws, assimilation policies, and the preservation of cultural and national identity. This movement has historically manifested in various forms, including opposition to specific immigrant groups perceived as threats to economic, social, or cultural stability. Notable examples include the Know Nothing Party in the 19th century and more recent movements advocating for reduced immigration.