For every one of those, I can show probably 5 that come here, bringing their corruption, and bad attitudes with them. Most don't even bother to become Americans, hang onto their cultures, and stay within their own communities.
Even many with that have been successful, that have their own businesses, only hire their own and isolate themselves. That why you have a fragmented American society today. You've got Korea communities, Vietnamese communities, Muslim communities, and the list goes on and on and it's been this way for many years now.
I can show you entire cities where you have to actually look hard to see store signs in English.
Fragmented does not begin to describe what is occurring in America today.
Immigrant patterns are different because it's now possible to easily talk with the “old country,” fly to the old country and more or less stay in constant touch with those in the old country. This didn't exist a hundred years ago. Crap, I remember when a phone call from California to New York was a big deal...Long distance!
We're also seeing immigrants move freely and unapologetically back “home.” A few years ago it Irish guys moving back, now it's Poles leaving.
So you are suggesting that in the utopia of the past, when immigrants came here, they instantly learned english (if they didn't speak it, and they very quickly integrated into mainstream society?
I don't think it was so rosy. It takes time for a new segment of the population to find it's own version of "American".
Do you really claim that the America of your grandfather had the same culture as the America of the Original Americans (the pioneers)?
This is a dynamic country, ever changing to suit the current population influxes. If you want cultural stability, move to a homogeneous country with an actual long and seamless history of continuous lineage and culture. (good luck!!!!!!!)