The reason immigrants (generally) screw things up is because of failed acculturation (both ways). This is a process starting socialization of different cultures intending to reach a stable state - which can never be reached. This leads to confusion, including parallel organizations. https://www.slideshare.net/Job....aydaGulshanAra/chapt
Since 1960 America invited millions of migrants resulting in a 30% dropped contribution to the World Economy. The "world" is not sending their best to America, and its NOT going to stop.