I’m responding to point #3 specifically because I have anecdotal experience. I immigrated via a work visa (white collar work), and at least from my circle, most if not all of us do not have republican/conservative views. All of us from 3rd world countries moved because we were tired of the low pay, low quality of life, and government corruption in our home countries. And since we are part of an educated class of workers who actually have experience living in poorly governed countries, most if not all realize that conservatives are the ones slowly turning the country into what we were escaping from in the first place.