This will not end well

Diversity + Proximity = War.  You can't be neighbors with someone in your country who doesn't even speak the language of your country.

Some 13.5 percent of the U.S. population -- 44 million -- is foreign born, the highest level ever, and many are not proficient in English, choosing to speak Spanish at home instead. 

A report from the Migration Policy Institute found that 22 percent of the U.S. population does not speak English at home.

They have to go back.  Immigrants who refuse to assimilate are no longer immigrants they are invaders.  If they don't want to become American, they have to leave.  Send them back home.