We have a problem because a majority do not except such views. Open debate is hindered due to Roe v. Wade.
Return the issue to the states. Honest debate can ensue. People can be convinced of natural law and why innocent human life should be defended from conception onward.
We have few cards to work with. I'm going with the one with the best chance of saving lives faster.
Which other unalienable rights do you want to do this with?
Free speech? The right to peaceably assemble? Religious expression? The right to petition government for redress of greivances? The right to keep and bear arms? Trial by jury? Private property? What??