downvoters: is this outcome undesirable? if so, why, and what can we do to fix it? because I'm pretty sure you're not supposed to say that having more kids is a good thing, and using immigration/migration as a means of replacing those kids we're not having is a bad thing.
thus, is this outcome (declining citizen birth rates, increased immigration/migration compensating for it) not the intended, desired one?
From what I understand, people noticed the fact that whites were gradually becoming a smaller proportion of the population of Western nations, due to both lower fertility and increased immigration.
In addition to this, some migrant groups (notably Muslims from the middle-east) have higher-than-replacement fertility rates.
Extrapolating this out, the idea was that whites would eventually be "replaced" by Muslims and other "minority" groups over the course of many decades.
I don't quite know how the Jews got involved in the conspiracy, but I always found the accusation that they're trying to increase the population of Muslims to be a bit ridiculous.
https://www.census.gov/content/dam/Census/library/publicatio...