Stateline, the news service of the Pew Charitable Trusts, tracks developments involving same-sex marriage at the state level. A March 21, 2013, Stateline article includes a graphic (scroll down) showing which states allow same-sex marriage, civil unions or domestic partnerships, and which ones do not.

Read an April 15, 2013, article from Slate arguing in favor of legalizing polygamy as the fight for gay marriage advances.

Theodore C. Bergstrom holds the Aaron and Cherie Raznick Chair of Economics in the economics department at the University of California in Santa Barbara, Calif., and is the author of On the Economics of Polygyny (University of Michigan, 1994), which is available online.

Jenifer Kunz, an associate professor of sociology at West Texas A&M University, has researched the attitudes of 21st-century members of the Church of Jesus Christ of Latter-day Saints toward polygamy.

Edwin B. Firmage is a law professor at the University of Utah in Salt Lake City who has defended polygamists. A monogamist and a great-great-grandson of polygamist Brigham Young, Firmage teaches constitutional law. He is co-author of Zion in the Courts: A Legal History of the Church of Jesus Christ of Latter-day Saints, 1830-1900 (University of Illinois Press, […]

Irwin Altman is a distinguished professor of psychology at the University of Utah in Salt Lake City and the co-author of Polygamous Families in Contemporary Society (Cambridge University Press, 1996).

Martin Ottenheimer is an anthropology professor at Kansas State University in Manhattan, Kan., whose research specializes in marriage and family relationships.

Maura I. Strassberg is a law professor at Drake University in Des Moines who has expertise in sexuality law and has written about polygamy.

Michele Alexandre, an associate law professor at the University of Mississippi, is a 2004 Fulbright Scholar researching the legal protection afforded to women under the Haitian practice of placage, an informal form of polygamy.