Roe v. Wade established constitutional protections for individuals seeking abortions, placing the right to choose an abortion within a broader and fundamental “right to privacy.” Importantly, Roe also established an explicit framework for implementing those protections, based entirely on the trimesters in a pregnancy….

That framework remained in place for 16 years until, in 1989, Pennsylvania Gov. Bob Casey Sr. – an anti-abortion Democrat – signed into law the Pennsylvania Abortion Control Act. The legislation imposed a range of restrictions on abortion access. These included a 24-hour waiting period for patients to give their fully informed consent, spousal notification requirement and parental consent for pregnant minors.

Planned Parenthood sued the state, arguing that the law violated the central elements of Roe by impeding a woman’s ability to seek an abortion during the first trimester. The case made its way up to the Supreme Court.

In Planned Parenthood v. Casey, the Supreme Court upheld all but one main provision in the new law, the spousal notification requirement. In the decision, the court still claimed its commitment to “the right of the woman to choose to have an abortion before viability.” Yet the ruling allowed states to regulate that choice at any point as long as they did not impose an “undue burden” on access to abortion services.

Roe had given women an unmitigated first-trimester right to choose. Casey rendered abortion rights contingent on and subject to state control at any point during a pregnancy.

The new “undue burden” framework provided two avenues for states seeking to limit access to abortions.

First, it widened the timeline for intervention by the state. Under Roe, courts would treat any regulatory constraints on first-trimester abortions as suspect. Under Casey, states could now far more easily regulate abortions at any time during a person’s pregnancy.

Second, Casey shifted the requirements for anti-abortion states and abortion-rights advocates when arguing their positions in court. For one, it reduced the requirements that states had to meet to uphold abortion restrictions. Under Roe’s framework, states regulating abortions during the first trimester needed to prove to the court that they had a compelling reason for limiting a woman’s right to choose. Casey removed that barrier. Casey’s “undue burden” framework also required individuals suing states to prove that the policies imposed significant challenges to abortion access.

In effect, under Casey, any abortion regulation would now be presumed constitutional unless someone could prove that it imposed undue and significant burdens on a woman’s ability to access an abortion.

In 2015, the Fifth Circuit revisited and reinvigorated Casey when reviewing a Texas law restricting abortions, in Whole Women’s Health v. Cole. According to abortion-rights advocates, the Texas law imposed costly restrictions on existing abortion providers that would have forced most clinics in the state to close. The Fifth Circuit, relying on Casey, upheld the law. It argued that regulating abortions before the third trimester is unconstitutional only if it places “a substantial obstacle in the path of a woman seeking an abortion” or if it “serves no purpose other than to make abortions more difficult.”

Three years later the Supreme Court overturned the Texas law in a 5-3 decision, invalidating the Fifth Circuit’s reasoning. However, two justices in the majority – Justices Ruth Bader Ginsburg and Anthony Kennedy – are no longer on the court. Ginsburg died in 2020 and Kennedy retired in 2018. Donald Trump filled their vacancies, along with a third left by the late Justice Scalia, with three conservative justices. Their addition to the court places the Fifth Circuit’s reading of Casey back in play at a pivotal moment in abortion politics.

The above comes from an Oct. 28 story in The Conversation.