Anthony Aragon (L) and David Westman, both of Denver, Colorado, become one of the first same-sex couples to be issued a Civil Union license at a midnight ceremony in the Denver Office of the Clerk and Recorder, at the Wellington E. Webb Municipal Office Building on May 1, 2013 in Denver, Colo.

People queue for a chance to be issued a Civil Union license at a midnight ceremony in the Denver Office of the Clerk and Recorder, at the Wellington E. Webb Municipal Office Building on May 1, 2013 in Denver, Colo.

Anna (R) and Fran Simon, both of Denver, Colo., become the first same-sex couple to be issued a Civil Union license at the midnight ceremony.

Fran (L) and Anna Simon kiss just after midnight after being the first to get a civil union in a ceremony performed by Denver Mayor Michael Hancock (R) in Denver May 1, 2013.

Supporters of same-sex marriage celebrate after France's legislators approved a bill for same-sex couples to marry and adopt children. Lawmakers in the lower house National Assembly passed the bill by 331 votes for and 225 against.

Anti-gay marriage protesters set off fireworks during a demonstration in Paris, France, April 23.

Demonstrators face riot police, Tuesday, April 23, in Paris, France.

Unidentified protesters against same-sex marriage call with a banner for a referendum as they attempt to disrupt the final parliamentary vote in the French National Assembly to legalize gay marriage and allow same-sex couples to adopt children, at the French National Assembly in Paris, France, April 23.

People look on as Uruguay's Congress discussed a bill to allow same-sex marriages on April 10, 2013, making it the second country in predominantly Roman Catholic Latin America to do so. Seventy-one of 92 lawmakers in the lower house of Congress voted in favor of the proposal, one week after the Senate passed it by a wide majority. Leftist President Jose Mujica, a former guerrilla fighter, is expected to sign the bill into law.

Members of the gallery look down and applaud as the Washington state Senate passes a bill that would legalize same-sex marriage Wednesday evening.

Gov. Chris Gregoire motions Sen. Ed Murray over to embrace him after the Washington state Senate voted for a proposal to legalize same-sex marriage Wednesday evening.

Rep. Laurie Jinkins, right, D-Tacoma, waves with constituent Marcy Kulland from one Senate gallery across to the other Wednesday, Feb. 1, 2012, in Olympia, Wash.

Women dressed as bride and groom march in the annual Gay Pride parade in Greenwich Village, Sunday, June 26, in New York. One of the world's oldest and largest gay pride parades was expected to become a victory celebration Sunday after New York's historic decision to legalize same-sex marriage. The law signed by Gov. Andrew Cuomo on Friday doesn't take effect for 30 days.

Supporters of same sex marriage celebrate after Senate members voted and approved same-sex marriage at the Capitol in Albany, N.Y., Friday, June 24. New York lawmakers narrowly voted to legalize same-sex marriage Friday, handing activists a breakthrough victory in the state where the gay rights movement was born. New York will become the sixth state where gay couples can wed and the biggest by far.