Same-sex marriage 2010 upon promulgation by the Argentine President. Argentina thus became the first country in Latin America, the second in the Americas, and the tenth in the world to legalize same-sex marriage. Australia became the second nation in Oceania to legalise same-sex marriage when the Australian Parliament passed a bill on 7 December 2017. The bill received royal assent on 8 December, and took effect on 9 December 2017. The law removed the ban on same-sex marriage which previously existed and followed a voluntary postal survey held from 12 September to 7 November 2017, which returned a 61.6% "Yes" vote for
Same-sex marriage in Mexico Association (ILGA) and Amnesty International (AI). On 21 December 2009, Mexico City became the first Latin American jurisdiction to legalize same-sex marriage. The law became effective on 4 March 2010. On 5 August 2010, the Supreme Court voted 8-2 to uphold the constitutionality of Mexico City's same-sex marriage law. The Court later ruled on 10 August 2010, that Mexico City marriages are valid throughout the entire country. On 28 November 2011, the first two same-sex marriages occurred in Quintana Roo after discovering that Quintana Roo's Civil Code did not explicitly prohibit same-sex marriage, but these marriages were later annulled by