I think down the road, if we're very good at framing the issue, we can get it down to 10 weeks.
As a fervent pro-abortionist, I certainly hope so. Ramping up the pressure on women to make a decision ASAP will rapidly increase the number of those microscopic f***ers into the garbage cans, increase the stem cell supply, and reduce single parent households. All a huge plus.
At least get it down to 15 weeks would be ideal for starters, since that's right around the cusp of when the prospective non-mother might accidentally start to feel it kick and grow attached. If we can just keep it in the tumorous sweet spot stage where the thing just sort of makes the woman ill and doesn't actually seem alive, and say "this is your last chance" right then and there, man... it'll be a gold rush of prenatal tissue.
What the hell is wrong with you!?