Principle is that the states have the authority to decide, not the federal government.
Lad, you’re correct as the laws stand today. What you’re incorrect about, is that such a situation is fixed. It’s not. FUTURE Pro-abortion or anti-abortion laws, at the federal level, could be passed and overrule the states.
When SCOTUS overruled Roe, that was the only Federal law/rule on abortion. So, naturally, with the Federal law gone, the issue returns to the states. In the future…a federal law could overrule the states. That’s why the Dems tried to pass one a month ago and why McConnell is talking about a future pro-life law.
Roe was the only Federal ruling on the matter. Once it’s gone, it’s a state issue. This is federalism 101.