Full Roe v Wade Ruling here:
http://www.tourolaw.edu/Patch/Roe/
If you've never read it, you should. It outlines clearly the constitutional issues at hand and addresses them quite well.
The problem with people trying to make abortion illegal is that legislation can never explicitly make some legal; you can't make a bill to make abortion legal (only a bill to reverse a standing amendment).
My problem with people trying to overturn the decision, is that they want to replace a very clear ruling with biblical nonsense (a religious trespass on my rights) and/or non-science (such as P.A.S. which is not recognized by the APA).
People are trying to throw out good law/precedent because they don't like it, not because it's unconstitutional. If you were to read the ruling, you can see how the insertion of a law criminalizing abortion would be at odds with several other areas of the constitution.
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