Slate discusses the discomfort many pro-choice folks express about the increasing request for “twin reductions:”

To pro-lifers and hardcore pro-choicers, this queasiness seems odd. After all, a reduction is an abortion. If anything, reduction should be less problematic than ordinary abortion, since one life is deliberately being spared. Why, then, does reduction unsettle so many pro-choicers?

For some, the issue seems to be a consumer mentality in assisted reproduction. For others, it’s the deliberateness of getting pregnant, especially by IVF, without being prepared to accept the consequences. But the main problem with reduction is that it breaches a wall at the center of pro-choice psychology. It exposes the equality between the offspring we raise and the offspring we abort.

via Twin reduction abortions: Why do they trouble pro-choicers? – By William Saletan – Slate Magazine.

For the record, I don’t think this sort of thing is less repugnant to pro-lifers–at least not the ones I know, or myself.  The author seems to be overlaying a rather utilitarian view onto why people are pro-life/anti-abortion.  Since many pro-life folks have problems with the consumerism that equates the willful termination of a human life with (for some even laudable) choice, there’s no reason they would be any less keen on challenging these procedures–indeed, I think many folks in the pro-life movement would place such procedures on par with late-term abortion, which are seen as being less necessary in difficult cases (i.e. health of the mother, rape, incest, pregnancy at a tender and biologically difficult age).