Is homophobia also sexism?This question was the focus of pioneering scholarship nearly three decades ago and has been the subject of reignited controversy because of litigation over marriage rights, employment discrimination, educational opportunities, fair housing, religious exemptions, and military service. Even though some courts, federal agencies, and state employment commissions have recognized that sexual orientation and gender identity discrimination are subsets of sex discrimination, including the landmark Title VII decisions Hively v. Ivy Tech and Zarda v. Altitude Express, academics, judges, and public administrators have been unable to articulate a plain theory of sexual orientation discrimination as sexism. Without a straightfor...