Justice Ginsburg argued that the Act directly conflicted with Roe, Casey, and Stenberg because it prohibited a previability abortion procedure without any exception for a woman’s health. In her view, those precedents require a health exception whenever substantial medical authority concludes that a prohibited procedure may be safer for some patients; they do not permit a legislature to prohibit the procedure merely because medical professionals disagree.
The trial courts had conducted extensive evidentiary hearings and found substantial medical support for intact D&E in defined circumstances. Physicians testified that it could reduce the risk of cervical or uterine injury, retained fetal tissue, injury from bony fragments, bleeding, infection, and anesthesia-related complications. They also identified particular conditions—such as uterine scarring, bleeding disorders, certain cardiac conditions, placenta complications, and fetal abnormalities—in which it might be the safest method. Justice Ginsburg maintained that these findings deserved respect and that conflicting testimony could not erase the substantial medical authority supporting a health exception.
She rejected the majority’s conclusion that alternative methods saved the statute. Standard D&E, labor induction, and fetal injections may carry greater risks for particular patients, and injections may themselves be medically contraindicated. A woman whose health requires the banned procedure cannot safely wait for piecemeal litigation, while a physician faces criminal prosecution for exercising medical judgment in an unanticipated medical emergency.
Justice Ginsburg also contended that the Act did little to advance fetal life because it banned only one method of abortion and did not prevent abortion itself. She viewed the majority’s justification as resting principally on moral disapproval of the procedure and on unsupported assumptions that women would regret abortion if informed of procedural details. In her view, such assumptions improperly displaced women’s autonomy and their ability to make informed decisions with their physicians.
Finally, she argued that the majority misapplied Casey’s “large fraction” formulation. For the relevant group—women whose health would be endangered if intact D&E were unavailable—the absence of a health exception burdens every case to which it matters. Because a health exception is designed for exceptional but medically necessary cases, its constitutional necessity cannot depend on showing that those cases form a large proportion of all second-trimester abortions.