SCOTUS Confronts the Exception That Would Kill the Rule!

Quick Overview

The Supreme Court counsel, Kathleen Harnett, argued that Idaho's HB500 unconstitutionally discriminates against transgender women like Lindsay Peacock by failing heightened scrutiny because circulating testosterone after puberty, the key biological advantage HB500 targets, has been mitigated by her hormonal treatment, meaning the preliminary injunction should be affirmed.

Key Points: Idaho's HB500 draws a sex-based line excluding all students with a biological sex of male from women's teams, justifying it to protect women's sports from 'biological advantages' stemming from circulating testosterone after puberty. Counsel argued HB500 fails heightened scrutiny as applied to Lindsay Peacock because she has suppressed her testosterone for over a year and taken estrogen, mitigating the alleged advantage. The classification is unconstitutional regarding subgroups where the government's justification does not apply, referencing precedent like Kaban, Nwvin, and Morales Santana. Chief Justice Roberts questioned whether viewing the position as a challenge to the sex distinction itself, rather than just seeking an exception to the biological definition of girls, transforms intermediate scrutiny into strict scrutiny. Counsel countered that they are asking for relief similar to Kaban, focusing on an 'as applied' challenge to a discrete subgroup (transgender women without biological advantage) where the rationale for exclusion does not apply. The counsel referred to historical cases like Boutellier where the Court interpreted Congressional language to include homosexuals and 'sex perverts' under the term 'psychopathic personality' to illustrate historical interpretations of excluded groups. Counsel emphasized that the challenge seeks to address a failure to align with the asserted state interest—controlling for sex-based biological advantage—not just an individual idiosyncrasy, referencing Trimble and Lai cases regarding non-marital children.

Context: This transcript captures oral arguments before the Supreme Court regarding Idaho's House Bill 500 (HB500), which categorically excludes students with a biological sex of male from participating in women's sports. The argument is presented by counsel Kathleen Harnett on behalf of a transgender athlete, Lindsay Peacock, challenging the law under the Equal Protection Clause. The core legal issue revolves around whether the state's justification for the sex-based classification—mitigating biological advantage via testosterone—applies to transgender women who have undergone hormone suppression therapy, and whether challenging this exclusion requires applying strict scrutiny.