I really don't know what if any legal avenues there are to prevent the extinction of America as we know it. It's very upsetting.
The American my grandparents knew is extinct. The American their grandparents knew is extinct. The country their grandparents immigrated from is now extinct.
There's communities in some cities that went from German speaking neighborhoods, to Yiddish to black street talk and are now becoming rennovated neighborhoods for yuppies.