Back in June, when the Supreme Court issued its Dobbs decision overturning Roe v. Wade, attention understandably focused on the majority’s view of what the Constitution allows. In their decision, the six justices contended that if the right to an abortion could not be found in the Constitution — or in early American legal precedent — then it doesn’t actually exist.

This was new ground for the Court, and it raised the specter of a rollback of other personal freedoms Americans have come to take for granted, including the rights to use contraceptives and to gay marriage.

In their Do...