I take offense at these words, and I have given you no basis for it. I have pointed out to you the difference between the questions of what forrest is and whether it has to be chopped down (one is referred to as positive and the other as normative). YOu should know the difference yourself and at least recognize it when pointed out by others.
As a loyal citizen and a pariot, I do take offense at your words, and you do owe me an apology.
Your statement, "citizenship requirement is an intervention into the labor market", is as clearly anti-citizenship and anti-American as you can get. What it is saying in essence is that citizenship is in the way of corporate needs, that to have a "free" labor market we need to do away with citizenship. In my opinion citizenship is what holds America together and what makes this land a nation. According to you citizenship is in the way and should be removed from the labor market equation. If this is not what you are saying then I will apologize for calling you anti American.
You are free to hire as many foreigners as you want, there is absolutely nothing stopping you from doing so. You do not need the American government to change it's immigration policies and the labor market in America just because you want to hire foreigners. There is absolutely nothing preventing you from hiring as many foreigners as you want all you have to do is go to the country that pleases you the most and hire away.