This casebook on the law of sexual orientation and gender identity weaves historical, sociological, and literary perspectives into the legal material. It provides comprehensive coverage of many significant recent developments, including the Supreme Court's 2013 same-sex marriage cases and the regulatory aftermath of the striking down of the Defense of Marriage Act. This edition also adds new material on the interstate recognition of same-sex couples' marriages, First Amendment claims raised by LGBT rights opponents, and family law disputes between LGBT parents. In addition, it significantly expands its coverage of gender identity issues.