This book examines the proliferation of policy making concerning the recognition and protection of same-sex relationships in the countries of North and South America, adding to the knowledge of developments in the United States and Canada, but, mostly notable, exploring more recent developments in Mexico, Central and South America, and the Caribbean. While much work has been done on developments in Europe and upper North America, this book attempts to broaden the understanding of relationship equality policy proliferation around the world and to add new insights regarding the policies of sexuality in different national contexts. The book discusses the several factors that have constrained and facilitated policymaking in this area including legal systems, public opinion, political culture, and, more particularly, the role of religion as a key obstacle in the recognition of rights for same-sex couples. The chapters also explore the role of institutional mechanisms, political parties, NGOs, IGOs, and international norms as significant factors for policy adoption This book explores policy innovation for same-sex couples throughout the Americas and includes same-sex marriage legislation, civil unions, and other new developments for same-sex couples throughout the Americas at both national and sub-national levels. This scholarship is innovative because though much has been written regarding developments in North America, there is very little work dealing with recent developments in the rest of the Americas.