Alito, J., dissenting
members of the same sex, these two employees are not materially identical in every respect but sex. On the contrary, they differ in another way that the employer thinks is quite material. And until Title VII is amended to add sexual orientation as a prohibited ground, this is a view that an employer is permitted to implement. As noted, other than prohibiting discrimination on any of five specified grounds, “race, color, religion, sex, [and] national origin.” 42 U. S. C. §2000e–2(a)(1), Title VII allows employers to decide whether two employees are “materially identical.” Even idiosyncratic criteria are permitted; if an employer thinks that Scorpios make bad employees, the employer can refuse to hire Scorpios. Such a policy would be unfair and foolish, but under Title VII, it is permitted. And until Title VII is amended, so is a policy against employing gays, lesbians, or transgender individuals.
Once this is recognized, what we have in the Court’s hypothetical case are two employees who differ in two ways—sex and sexual orientation—and if the employer fires one and keeps the other, all that can be inferred is that the employer was motivated either entirely by sexual orientation, entirely by sex, or in part by both. We cannot infer with any certainty, as the hypothetical is apparently meant to suggest, that the employer was motivated even in part by sex. The Court harps on the fact that under Title VII a prohibited ground need not be the sole motivation for an adverse employment action, see ante, at 10–11, 14–15, 21, but its example does not show that sex necessarily played any part in the employer’s thinking.
The Court tries to avoid this inescapable conclusion by arguing that sex is really the only difference between the two employees. This is so, the Court maintains, because both employees “are attracted to men.” Ante, at 9–10. Of course, the employer would couch its objection to the man differently. It would say that its objection was his sexual orientation. So this may appear to leave us with a battle of
