BadNina, the last time I watched CNN George W. Bush was still President.
The point of my first post was that since Donald Trump was elected people have started treating those who disagree with them with hatred and/or fear. I hope that if we have disagreements, they can be respectful. To answer your questions:
1) I do not know enough about geopolitics and the effects of immigration to know whether or not America's current levels are too high, too low, or about right. A 40% cut in a year does seem drastic, particularly since immigration levels have been
essentially flat since 2001, but I trust the opinions of people who study this sort of thing professionally more than I trust my gut.
2) Of course we have the right to secure borders. I never argued otherwise. What exactly constitutes a secure border will be different for different people.
3) You are phrasing your question as an either/or, and I don't think that's the case in reality. Immigrants often benefit the needs of existing citizens, particularly when it comes to starting businesses. Elon Musk is a good example of this. If he wasn't let in, the 14,000 American Tesla employees would be out of work and the company would instead be running in his native South Africa.