9th amendment (and possibly 10th) = "right to privacy"
Look for the connections in the legal debates and SC rulings which examined "right to privacy" to support Roe.
Look to the 60s starting with Griswold - anti-choicers question 9th and 10th amendment "interpretations"
Here's an excerpt of an article which will explain much better than I am able:
<big snip>
The Griswold decision was the starting point of a continuing debate over the proper role of the Ninth Amendment in constitutional jurisprudence. One side of the debate reads the Ninth Amendment to mean that the Constitution protects not only those liberties written into the Bill of Rights but some additional liberties found outside the express language of any one provision. The other side sees no way to identify the unenumerated rights protected by the Ninth Amendment and no objective method by which to interpret and apply such rights. Under this view, courts that interpret and apply the Ninth Amendment do so in a manner that reflects the political and personal preferences of the presiding judge. Federal courts have attempted to reach a middle ground.
A number of federal courts have ruled that the Ninth Amendment is a rule of judicial construction, or a guideline for interpretation, and
not an independent source of constitutional rights (Mann v. Meachem, 929 F. Supp. 622 <N.D.N.Y. 1996> ). These courts view the Ninth Amendment as an invitation to liberally interpret the express provisions of the Constitution. However,
federal courts will not recognize constitutional rights claimed to derive solely from the Ninth Amendment (United States v. Vital Health Products, 786 F. Supp. 761 <E.D. Wis. 1992> ). By itself, one court held, the Ninth Amendment does not enunciate any substantive rights. Instead the amendment serves to protect other fundamental liberties that are implicit, though not mentioned, in the Bill of Rights (Rothner v. City of Chicago, 725 F. Supp. 945 <N.D. Ill. 1989> ).
After Griswold, federal courts were flooded with novel claims based on unenumerated rights. Almost without exception, these novel Ninth Amendment claims were rejected.
<snip>
On appeal the Supreme Court affirmed the district court's ruling, stating that the right to privacy, "whether it be founded in the Fourteenth Amendment's concept of personal liberty and restrictions upon state action, as we feel it is, or, as the District Court determined, in the Ninth Amendment's reservation of rights to the people, is broad enough to encompass a woman's decision whether or not to terminate her pregnancy" (Roe v. Wade, 410 U.S. 113, 93 S. Ct. 705, 35 L. Ed. 2d 147 <1973>).
Federal courts continue to rely on the Ninth Amendment in support of a woman's constitutional right to choose abortion under certain circumstances.
(emphasis added to highlight what I thought was pertinent to your question)
link to this articleI don't have an answer to your question exactly, but perhaps this can act as a guide for where you might want to look and observe. What you describe appears to be an attempt to muddy interpretations in an effort to overturn Roe and other privacy legislation.
Edit to add: to overturn Roe and other privacy legislation.