The problem with inviting immigrants into the USA is אין אורח מזמין אורח a guest can not invite a guest. Besides that there is a problem with using immigration to change the demographics of the USA which intends to change the basic nature of the WASP society. If anywhere else had managed to pull together a decent wholesome society like the USA in its first 200 years then there might be some reason to try and change the USA towards some better model. But since no such society has ever existed with the degree of freedom and justice of the USA it makes no sense to try and change it. And if such a great society elsewhere exist now then why do people still try to get into the USA? Why do they not stay in their utopias?