... the Court upheld the right to have an abortion as established by the "essential holding" of Roe v. Wade (1973) and issued as its "key judgment" the imposition of the undue burden standard when evaluating state-imposed restrictions on that right.[1] ...
The case arose from a challenge to five provisions of the Pennsylvania Abortion Control Act of 1982; among the provisions were requirements for a waiting period, spousal notice, and (for minors) parental consent prior to undergoing an abortion procedure. In a plurality opinion jointly written by associate justices Sandra Day O'Connor, Anthony Kennedy, and David Souter, the Supreme Court upheld the "essential holding" of Roe, which was that the Due Process Clause of the Fourteenth Amendment to the United States Constitution protected a woman's right to have an abortion prior to fetal viability.[3]
The Court overturned the Roe trimester framework in favor of a viability analysis, thereby allowing states to implement abortion restrictions that apply during the first trimester of pregnancy.