Most have learned to HATE the USA.
They think the Civil Rights laws are the product of a weak culture. What we think of as noble egalitarianism is to them an expression of feminine fear. So they have no respect for us, which is contempt, and that leads to the hate.
What rational country pretends that people who hate them have a right to live with them, and that we should engage in the self delusional charade of calling them immigrants?