Good luck with that. Current immigration law and practice is a complete disaster. It's very difficult to do it legally, and so easy to cheat. Reputable firms and honest would-be immigrants lose out. I lost my best employee because we couldn't get her resident status despite an advanced degree, enormous potential, a great work record and many thousands spent on immigration lawyers.
My issue is--I don't think it is wise to take in some many immigrants from one single country or even ethnic group. I would not care if it was Sweden that they were coming from. It is about preserving our way of life and system of governement or what is left of it.
150 years ago people voiced similar fears about the Irish and Germans. Today it's mostly Mexicans and Russians. They aren't coming in enough numbers to completely change the demographics. The Republic is not in danger because of this.
How do you define "completely change the demographics?"