Yes, the states are kindof like independent nations ... except for the fact that they formed a union based on a Constitution that binds them all, and that Constitution protects the Right to Life (among other things), that right being the first inalienable right granted by God and not by the Constitution itself.
Alito's claim that there's no mention of abortion (one way or the other) in the Constitution is incredibly dangerous, in that it implies that abortion doesn't fall under the category of Right to Life, and that therefore an unborn child is not Life under the Constitution. This opens the door to various states legislating what "life" is, to the point that the next steps are to claim that people who are in "vegetative state" are not "life" (like Terri Schiavo) or that people who are mentally retarded to the point of not being functional are not "life". If the states are left to determine what life means, then the Satanic blue states are just a hair's breadth away from euthanasia and eugenic murder.
So, between the fact that Alito claims there's not inherent protection for unborn children in the Constitution (false) and the fact that he asserts that the federal union has no role in regulating abortion (thus precluding federal laws being able to trump state laws permitting abortion), this is an incredibly harmful ruling that does more damage long term to Pro Life than if it hadn't been made and if the current progress of states gradually making abortion (effectively) illegal had been allowed to continue as is.
All of these dangerous implications that Alito makes are ALREADY today a reality. There's no new evils from this ruling. They already exist today.
a) Abortion rights ignore the constitutional right to life. This has been ignored for the last 50 years.
b) "no mention of abortion in constitution" = RoeVwade wasn't approved based on this, so this is nothing new.
c) An unborn child hasn't been considered life, ever. Especially not for the last 50 years.
d) Terri S and the battle against euthanasia has been going on for a while now; nothing new.
No states have been abortion effectively illegal. Have they put restrictions on it? Absolutely. And that will not be impeded by this ruling.
I think many of you have PTSD and think that nothing good can happen in the world. And/or you think that the elites have so much control that everything that happens is a "trick" to beat the good guys. This is true to some extent, but not to the extent that your fear is projecting. We are catholics, not defeatists! God is still in control; prayers can move mountains.