Nativist

[Jessica]

Someone who stands for the policy of protecting the interests of native-born or established inhabitants against those of immigration.

[Michiko]

a person who supports the idea of nativism (= the idea that people who were born in a country are more important than people who have come to the country from somewhere else) :

[Kai]

Relating to or supporting the policy of protecting the interests of native-born or established inhabitants against those of immigrants.