Answer:
They believed native-born Americans were superior to immigrants and should be protected from immigration.
Step-by-step explanation:
The Know-Nothing Party was made up of anti-Catholics and anti-immigrants who felt they were superior and did not want Catholics or any immigrant to rise to any political position.
They also tried to deny them jobs in the private sector by claiming that they needed true Americans to do those jobs.
They believed they were superior to immigrants and they also wanted to. Reduce the influence of foreigners in America.