Some points which occur to me:
- importing immigrants who succeed is good foreign aid--they tend to return to the country of origin and/or send remittances.
- I wonder what happens to the children. There's research, mostly I think on Hispanic immigrants, which show the children as losing the advantages of immigrants and gain the disadvantages of American children (obesity, crime, etc.)
- such success is complicating the task of American racism in finding support for their stereotypes.
- I write all this despite having had negative feelings towards African/Caribbean immigrants in FSA some 25 years ago--there were a couple with whom I had some interactions. It was easy to doubt their ability to contribute when they had no background in US agriculture (though looking back on it I suspect I was being unfair.)