Non-European immigration to the US has been vast in the last decade especially, but also numerous since 1965 when the "kill heritage act" was put in place.
High tax rates for european heritage citizens and massive subsidies for invaders has greatly contributed to the birth rates you mention (thanks for bringing that up).
But in your mind, White survival = White supremacy. This tells us everything we need to know about your intentions for our sons and daughters.
Today your president is announcing that he is ending birthright citizenship with an executive order...despite it being a Constitutional right. Any average 8th grade government student knows that the Constitution is not amended via executive order. To believe in such a thing is a level of understanding that borders on illiteracy, which is exactly the mental capacity of the typical Trumper.
He even said at my local rally that the NYSE opened the day after 9/11. I was a full time stock trader at the time, and I remember it being closed almost a week. No one cares, though. He just makes up whatever bullsh!t he feels like, all the while crying about "fake news."