Why did nativism strengthen during the 1920s, and how did the government deal with the tensions?

Nativism is defined as the belief that one's native land needs to be protected against immigrants. The rise of nativism in the 1920s was caused mainly by immigration. The immigrants were the ones who were blamed for the bombing, strikes and recession. President Warren G Harding promoted a "return to normalcy," and isolationism helped advance the cause of freedom and democracy. Hope this helps.