For the first time ever, the U.S. Supreme Court tackled the issue of gay marriage, reviewing the constitutionality of California's Proposition 8 ban on same-sex marriage and the Defense of Marriage Act (DOMA), a federal law that defines marriage between only a man and a woman.
Nine states and the District of Columbia allow same-sex marriage: Connecticut, Iowa, Maine, Maryland, Massachusetts, New Hampshire, New York, Vermont, and Washington.
Here is the audio from the US Supreme Court hearing, known as Hollingsworth (The Petitioner) v Perry.
And here's the full transcript:
Today social media had their say on the issue with more than 70,000 people in the US changing their profile picture to an equality symbol that promotes same sex marriage.