There is no assimilation; there is only miscegenation.
Our ruling clowns have figured this out, which is why they’re hard at work pushing mixed race couples in media, entertainment, and advertising. They see the writing on the Diversity + Proximity = War wall, and they know that mixing up the gene pool into an indistinguishable slurry that ironically strips all human diversity from the world is the only way to prevent their deserved ousting by the people they have for too long exploited as disposable consumerist widgets easily replaced by imported scab consumers and wage gutters.
They won’t win. Blood is thicker than shekels.