Since 2000, 15 countries (Argentina, Belgium, Brazil, Canada, Denmark, France, Iceland, Netherlands, New Zealand, Norway, Portugal, Spain, South Africa, Sweden, and Uruguay) have legalized same-sex marriage, as have parts of Mexico, the United States and the Untied Kingdom. (In the United Kingdom, same-sex marriage is legal in England and Wales, and will become legal in Scotland in the Fall of 2014.) Same-sex marriage in Luxembourg will come into effect Jan. 1, 2015.
In the United States, same-sex marriage is legal in 19 states (California, Connecticut, Delaware, Hawaii, Illinois, Iowa, Massachusetts, Maryland, Maine, Minnesota, New Hampshire, New Mexico, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Vermont and Washington), and in the District of Columbia. Legal challenges are pending in the remaining 31 states.