It's All Settled for Sonia

I've never been a fan of the phrase, "so it's all settled then", but apparently, a brilliant mind like Sonia Sotomayor might be. To her, the right to an abortion is "settled law". I see, just like the "settled law" in the Dred Scott Decision. What was it that ultimately settled that law? And that IT happened after THIS, right? All settled, eh?