I’m not a neonatologist, so I couldn’t say any more than you could. But medical science has a way of pushing the “point of viability” back with some degree of regularity. That’s one of the reasons why the original Supreme Court cases dividing the right to kill among the three trimesters is ridiculous. And when you add the “health” of the mother, which the dissent did for partial birth abortion in Carhart, that’s basically abortion on demand, including partial birth abortion. But then, it has really always been abortion on demand at all stages until Carhart.