Same-sex marriage in Mexico City

Same-sex marriage is legal in Mexico City —the Federal District of Mexico— having been approved by its Legislative Assembly on 21 December 2009, and signed into law by Head of Government Marcelo Ebrard on 29 December 2009. The law was effective on 4 March 2010.

Civil unions, known as Sociedades de convivencia which offer some of the rights of marriage, have been legal in the city since March 2007.

Being the seat of the Powers of the Union, Mexico City did not belong to any particular state but to all. After years of demanding greater political autonomy, residents were given the right to directly elect the Head of Government of the Federal District and the representatives of the unicameral Legislative Assembly (ALDF) by popular vote in 1997. Ever since, the center-left Party of the Democratic Revolution (PRD) has controlled both political powers.

In the early 2000s, Enoé Uranga, an openly lesbian politician and activist, unsuccessfully pushed a bill that would have legalized same-sex civil unions in Mexico City under the name Ley de Sociedades de Convivencia (LSC, Law for Coexistence Partnerships). Despite being passed four times by legislative commissions, the bill repeatedly got stuck in plenary voting for its sensitive nature, which could be attributed to the widespread opposition from right-wing groups and then-Head of Government Andrés Manuel López Obrador's ambiguity concerning the bill. Nonetheless, as new left-wing mayor Marcelo Ebrard was expected to take power in December 2006, the ALDF decided to take up the bill and approved it in a 43-17 vote on 9 November 2006.

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