Should it be possible for an individual to change their legal sex? If so, how easy should it be? Should it be changeable only after a diagnosis of gender dysphoria and a waiting period? Or should it be sufficient to “self-identify” as a person of the opposite sex? Or should sex be removed from birth certificates, so that there is nothing to change? Robert Wintemute carefully examines these conflicts, considers the differences between transgender rights and lesbian, gay and bisexual (LGB) rights, and proposes ways to achieve co-existence between transgender rights and women’s, children’s and LGB rights.