In Olden Times;
America was known as a Melting Pot.
I have no problems introducing these refugees into a melting pot.
Of course, it’s filled with molten iron. . . (evil grin)
Yes but Melting Pot simply does not mix well with balkanization, uh, diversity.
And of course to be sure there is no chance of melting into an “American Way” the invaders are inflicted on areas of less dense population like Idaho. Must not funnel them through the big cities back east where the invaders would be overwhelmed by the existing culture.