Here's your slippery slope.
In 1973 SCOTUS ruled, in Roe v Wade, that first trimester abortions were a right granted some damn place in the Constitution.
A bit later SCOTUS ruled, in Doe v Bolton, the right to kill babies extended all the way to through the third trimester due to an illusory "health of the mother" issue also located in the same document, somewhere.
Today we kill'em on the way out and some Professor down at Princeton is lobbying to extend that to, oh lets say, two or three years after the birth of the baby.
How's that for slippery from the same slippery clowns who have ruled virtual porn protected in that same heavy breathing document.
Speaking as a Christian, and just a decent human being, digitally manufactured child porn is evil, disgusting, vile, wretched. It forebodes ill for our society that we are even discussing this, but I fear the consequences of censorship more.