This book outlines the history of same-sex marriage, explaining how politics and religion have intersected to decide and control who can legally marry.

Marriage equality became law in the United States in 2015 with the Supreme Court ruling in Obergefell v. Hodges. Marriage is, strictly speaking, a secular ceremony, requiring only civil sanction. However, many couples also seek the blessing of a religious body upon their union, and not all religious bodies support marriage equality. Some oppose it outright and some support it outright, while others are divided.

This work examines the issue of same-sex marriage in the U.S. and internationally. It surveys the attitudes of major religions towards same-sex marriage and also looks at leading and sometimes polarizing personalities, like politician Pete Buttigieg and Kentucky clerk Kim Davis, who exemplify both the religious and political sides of the issue. The book's A-Z organization makes it easy for readers to locate important court cases, individuals, religious bodies, and social movements at the center of the same-sex marriage debate.