In United States v. Skrmetti, the U.S. Supreme Court voted 6-3 along ideological lines to uphold a Tennessee law banning gender-affirming care for minors, reaching that conclusion by construing equal protection jurisprudence in regressive ways. The majority reasoned that the law not only did not discriminate on the basis of sex, but did not discriminate on the basis of transgender status either. This post explains how the Skrmetti decision threatens to narrow the scope of constitutional equality protections in the United States, why it is dangerous for the equality claims of women and lesbian, gay, and bisexual people, and why it is likely to be so damaging for transgender people targeted by state and federal lawmakers in recent years.