@ehBeth,
I heard today that America needs 5 million people to fill needed jobs. Most of these jobs are middle income, high tech jobs. The Republicans would rather import those jobs. Then, not educate USA lower income youth to these levels (read non white principally); therefore, trapping them in substandard jobs in the slums.
Why do we need these immigrants, the USA is a non growth nation due to low birth rates. In conclusion, tRump and Republicans want to accept whites that have merit; ie, education and high technical skills only. No chain migration or unskilled works. Farmers, construction, restaurant, janitorial and other lower skill businesses are worried big time.
There's nothing wrong with chain migration, it is just another thing that the USA has become great from. Whether it be the blacks, Chinese, Irish, Germans, Slavs, Jews, Vietnamese, Indians, Muslims, etc. When you bring in families you create loyalty. I see nothing wrong with chain migration.
"Chain migration is a term used by demographers since the 1960s to refer to the social process by which immigrants from a particular town follow others from that town to a particular destination city or neighborhood." -Wiki
Virtually every line of my family goes back to the 16-1700s in America. Up until the early 1900's, if you follow census records you can see familyvlines following each other from one state to the next. I am a direct product of chain migration and proud of it.