The US no longer has a high enough birth rate to maintain our population. We don’t have children, we have immigrants. Is Bill suggesting we build a wall? That’s our new method of “birth control.”
People have babies when they can see a future for themselves. Jobs, careers. Not living with the parents and grandparents in the same house. Not that that’s all bad. But people do respond to incentives. I suppose the worst part is the a-holes spew this stuff and try to meme it into existence. We have to take up defensive memeing to block it.
If you look at the point when the birth rate fell it was after we began massive importation both of legal and illegal aliens.
Crowding causes birth rates to fall.