Because that's what late term abortions are. Plain and simple. You know it. I know it.
One of the problems with the emergent Left is that we've lost a powerful trump card in the debate. Used to be that we could point to old, pre-Christian societies to say that, despite the methods sometimes used, the world was better off as the Christian world view, however problematically, made its way to the corners of the globe.
We could point to things like matricide, patricide, human sacrifice, suttee, and others that non-European, non-Christian cultures did as evidence that we're better off than they were. We could say that ditching the Judeo-Christian world view could plunge us back into an age where such heinous practices reemerge as the norm.
Now, as we have even Catholic outlets becoming sounding boards for bringing those practices back in the form of assisted suicide, euthanasia, and late term abortions, we've lost that argument. Increasingly, people have moved from not caring about returning to such a world, to actually wanting to return to such a world.
I've said we're going to have to wake up and realize the old pagans have been reborn, and are now working on evangelizing the Christian Faith. For 2000 years, the Christian faith went into the world, however imperfectly, sometimes brutally and sinfully, under the charge to make disciples of the nations.
Now, the nations are making disciples among the Christian faithful. Will we pull out in time? Will we see the writing on the wall before it's too late? Hard to tell. If these well known and politically powerful Catholic Senators, and the subsequent silence from Catholic circles and leadership, says anything, I'm not confident we'll make it without a test by fire.