I agree that Trump probably thinks so. But he has been disappointed in his legal picks before -- let's hope he's disappointed again. To return abortion law to the states at this point, given the precedents and recent noxious behavior by various states, would bring humiliation to the Court. I believe all the justices would acknowledge that.
Someday, there will be proven artificial wombs
-- which would seem to resolve the very difficult question of "when is too late?" technologically. If that can be invented, presumably so can a safe transfer of the embryo from the woman to the device. That would make almost all fetuses/babies viable at arbitrary early ages, hopefully satisfying just about everybody.