Of the highest fertility states --- Alaska, Utah, Idaho, the Dakotas, and Nebraska --- only two of them (SD and NE) come out at above-replacement, and then only by a smidge.
Every other state is below Zero Population Growth, and even states with high numbers of immigrants (like CA, AZ and NM) are way, way under ZPG.
Even the vast majority of FReepers are big defenders of contraception and sterilization (even if not abortion and buggery.) Ya pays yer money and ya takes yer choice.
We are choosing national demise.