The Court treated the abortion decision as part of a broader category of protected privacy and family autonomy interests, building on cases involving marriage, contraception, and intimate decision-making. The Court recognized that pregnancy uniquely affects a woman’s bodily autonomy, health, and life prospects and that forcing pregnancy to continue imposes substantial burdens.

However, the Court also recognized that the state has interests that grow stronger over time. Early in pregnancy, the primary concern is the woman’s choice and health, and the state’s interest in potential life is considered less compelling. As pregnancy progresses, risks to the woman’s health change and the fetus becomes more developed, strengthening the state’s interests.

To balance these interests, the Court created the trimester framework as a constitutional line-drawing system. This framework was intended to provide clear guidance and to prevent the state from imposing early pregnancy bans that would effectively destroy the right.

Applying this framework, Texas’s statute was unconstitutional because it was essentially a near-total ban. It prohibited abortions even early in pregnancy when the woman’s privacy interest was at its strongest, and it did not provide a constitutionally acceptable structure for balancing the competing state interests as pregnancy advanced.

In future cases, Roe became the central abortion decision for decades. Over time, later cases modified Roe’s analytic structure and the trimester framework, culminating in Casey, which replaced the trimester approach with the undue burden standard.