Why isnt there more concern about parts pf Michigan being overtaken by Muslims?

I heard the Arab mayor of Dearborn told a Christian citizen to get out because he spoke on the proposal to name a street after some Arab.
I heard they want Sharia law from their countries on America.
Don't REAL Americans (those legal citizens of any race or ethnicity who want to preserve the American values, laws, and culture) have a controlling voice in their own country anymore?