You’re onto something that I figured out, as well.
The abortion (stem cell) issue is not about keeping future abortions legal. It’s about there being no moral weight assigned to the killing of the unborn, in order to assuage the guilt of those that have already been involved with abortion - either themselves, a girlfriend, or a daughter.
In order to keep the guilt weight off, they’ll do ANYTHING to justify the non-wrongness of what they did, especially encouraging others to commit the same sin in order for it to be more “normal”.
http://www.catholiceducation.org/articles/medical_ethics/me0044.html
In Forbes v. Napolitano (2001), the 9th Circuit Court of Appeals used the polio vaccine, among other things, to strike down an Arizona law banning experimentation on aborted fetal tissue. The court specifically ruled fetal tissue research must be legal to guarantee women the fullest possible range of “reproductive decisions.”