That only hurts the home countries of those type of immigrants. It's called a brain drain. Watch this video.
A brain drain of one country is a brain gain for another. Would the west care if other countries lose out. Even Canada loses some skilled Canadians to the US for better pay. Its a man eats man world
Another way of looking at it, what if these countries are giving them a better opportunity for life. In some home countries, the skilled person may be severely limited in their opportunities to grow and prosper.
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