There ARE "limits to growth", as far as I'm concerned.
The heart of the word "conservative" is... to conserve.
Look up that word in the dictionary.
Back when I was a boy, the USA had about 130 million.
I've always reckoned that that was about "right".
330 million?
Not so much.
It's time to close the borders and END immigration.
Don't "mend" it.
END it.