Sex-Defining Laws and Equal Protection

Many equal protection challenges to the recent onslaught of anti-transgender legislation ask courts to determine the constitutional limits of the state’s ability to define sex. The canonical cases addressed the state’s ability to treat men differently from women—not the state’s ability to define “men” and “women.” This difference between the canonical cases and what this Article calls “sex-defining” cases does not necessitate any monumental shifts in equal protection doctrine, but it does require courts to tweak their intermediate scrutiny analyses.