The 13th Amendment argument is compelling. I also read it in this essay. https://medium.com/illumination-curated/cowardly-supreme-court-refuses-to-fix-faulty-logic-flaky-ruling-in-roe-v-wade-890f8bfd449c I also like the argument that Roe, Lawrence, Griswold et al should have been decided under the 1st Amendment's anti-establishment clause as the notion that human life begins at conception is a religious view and a minority one at that--this next link is to my essay I wrote on that point in December https://medium.com/p/4d234daa2e71