To the original poster, once the pro-lifers have enough people on the Supreme Court, they just wait for a case to come up in order to allow them to revisit the issue. There is of course the distinct possibility that there’s already a planned “test case” in the works to do just that.
The Court has indeed revisited issues and reversed themselves in the past.
Lawrence v. Texas, 539 U.S. 558 (2003), is a good example; this case reversed the decision in
Bowers v. Hardwick, 478 U.S. 186 (1986), which had upheld State sodomy laws.
Lawrence subsequently overturned these laws all over the nation.
There’s no rule that the Supreme Court can’t reverse themselves. Lower courts are bound by decisions by higher courts, but the highest court in the land doesn’t bind itself.
Not sure on specifics but yes. The original ruling was incorrect anyway, it's not specifically enumerated therefore the decision reverts to the states. The court made up language in the Constitution to fit their ruling, had they actually read the Constitution they'd realize there isn't anything specific about abortion so therefore it goes to the states.
They danced around and used the “penumbra” argument that the right exists based on shadows of a right to privacy in the enumerated rights. They could’ve pointed to the Ninth Amendment (“The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people.”) to justify the right to privacy, but that would have opened such a can of worms that they didn’t want to go anywhere near it. The government has for far too long tried to interpret the Bill of Rights as if these are the
only rights that people have. The Ninth, just like the Tenth, may as well not exist.
As for whether or not the entitlement to regulate abortion reverts to the States, that would be based on the Fourteenth Amendment and whether or not the right to privacy should be “incorporated” into the States. The Court has been wholly inconsistent on incorporation—they’ve incorporated parts of the First and Fourth, but refuse to do so with the Second, for example.
Of course, I’m a voluntaryist so this is all largely academic to me. I don’t really care how they come up with protecting people’s right to privacy so long as they actually do so.