[3] According to a 2016 study, 20 percent of singles in the US have attempted some form of consensual non-monogamy at some point of their lives, such as polyamory or open relationships.
After contesting the decision for two years, Divilbiss eventually agreed to relinquish her daughter, acknowledging that she was unable to adequately care for her child and that this, rather than her polyamory, had been the grandparents' real motivation in seeking custody.
[12] In 2010, Ann Tweedy, a legal scholar, argued that polyamory could be considered a sexual orientation under existing United States law.
[29] In April 2024, Oakland City Council passed legislation banning discrimination based on family and relationship structure in businesses, civil services, and housing.
[30] In May 2024, Berkeley, California passed a law banning discrimination on the basis of relationship and family structure in businesses, city services, and housing.
[32] The Organization for Polyamory and Ethical Non-monogamy (OPEN) was founded in the United States in 2022 as “a nonprofit organization dedicated to normalizing and empowering non-monogamous individuals and communities.”[33][34] The Polyamory Legal Advocacy Coalition (PLAC), based in the United States, "seeks to advance the civil and human rights of polyamorous individuals, communities, and families through legislative advocacy, public policy, and public education.