What's the Harm? is an interdisciplinary collection of perspectives on the question of harm--whether legalizing same-sex marriage will cause harm to society, and whether the denial of same-sex marriage causes harm to society. This clarifying and illuminating book explores the societal, familial, individual, and jurisprudential harms of the legalization or prohibition of same-sex marriage. The contributors wrestle with the "what's the harm" question from a variety of academic and professional perspectives, emphasizing the significance and impact of legalizing same-sex marriage for law, government, family relations, and child welfare. What's the Harm? is a valuable resource of diverse insights, arguments, and information that contributes to a deeper understanding of what may be the defining issue of the first decade of the twenty-first century.