Thank God. If only because this would open up people born here to having their citizenship retroactively revoked. The constitution is pretty clear. If you don't like it amend it. If anything we need to expand it to include anyone who gives birth in this country. If you're willing to deal with our horrible maternity care system and help keep up our declining population, you deserve a blue passport.
The birth rate correlates inversely with female earnings growth and correspondingly with male earnings growth; or, more to the point, declining birth rates correlates with the advancement of feminism (including birth rates approaching and then reaching zero.) This is an observation and not a judgement. Take what you will with this information.
I think this is good; insofar as women have children, it should be because they want to, not because they're pushed into it.
I'll say - it also wouldn't kill us to have slightly fewer people on the planet. We're already taxing much of our systems/ecosystems past their breaking points. Smarter people than me, entire groups of scientists, are saying that what we're doing now is badly unsustainable and we're heading for trouble.