At the beginning of the twenty-first century, it ought to be obvious that the dominant powers and authorities in the United States and other Western countries are either indifferent to the accelerating racial and cultural dispossession of the historic peoples of America and Europe or are actually in favor of it. Mass immigration imports literally millions of non-white, non-Western aliens into the United States, Canada, Australia, and Europe, yet the governments of those nations make no serious effort to halt or restrict it, and cultural elites either decline to notice the transformation immigration causes or openly applaud it. Indeed, as immigration critic Peter Brimelow argued in his 1995 book Alien Nation, the immigration crisis in the United States has a political origin in the 1965 legislation that created it—it is not simply an ineluctable process of history, let alone the product of popular preference, but the result of the decisions and actions of political leaders who either wanted it to occur or who have been unwilling to stop it once it began.

https://www.amren.com/news/2019/08/managerial-revolution-elite-theory-immigration/