The only way that conclusion can logically be reached is to agree with the Roe court that an unborn child is not a person re the Fifth and the Fourteenth Amendments.
And to ignore the fact that abortion makes the fulfillment of any clause of the stated purposes of the Constitution impossible.
I’ve read the Roe decision, and I think its determination that a fetus is not “a person” within the meaning of the Constitution and its amendments is correct.
Certainly none of the Founders had any idea they were prohibiting abortion, which was widely practiced at the time.
Here’s James Wilson, one of the Founders:
“With consistency, beautiful and undeviating, human life, from its commencement to its close, is protected by the common law. In the contemplation of law, life begins when the infant is first able to stir in the womb. By the law, life is protected not only from immediate destruction, but from every degree of actual violence, and, in some cases, from every degree of danger.[6]”
Their understanding of fetal life was of course flawed, but I’m not sure we’re entitled to retrospectively change the meaning of the Constitution as desired. To me such a Constitution is a little too living.
I respect those who believe otherwise, but that’s my opinion.