Clannish, insular immigrants who refuse to assimilate ... large families and achieving kids who quickly overshadow other residents ... loyalty given to foreign, even adversarial, governments ... houses of worship where foreign languages are spoken ... dominating clergy who browbeat their people ... houses of worship set afire by arsonists. It is time for us to awaken to the reality that our American institutions are in danger from these foreigners who persist in bringing their un-American ideas with them, and…