same-sex couples. Eight days later, the law was enacted and became effective in March 2010. Since then, Mexican states have been legalising same-sex marriage one by one, via a combination of gubernatorial decrees, legislative measures, and judicial rulings. Most recently, on 26 October 2022, the Congress of Tamaulipas approved same-sex marriage, making it the final jurisdiction in the country to do so. United States On 26 June 2015, the US Supreme Court ruled that same-sex marriage is a constitutional right under the 14th Amendment to the Constitution, thereby making same-sex marriage legal throughout the United States. Prior to 26 June 2015, same-sex marriages were legal in the District of Columbia, Guam, and thirty-six states. In 2005, California became the first state to pass a bill authorizing same-sex marriages without a court order, but this bill was vetoed by Governor Arnold Schwarzenegger. In 2008, the Supreme Court of California overturned a 2000 law banning same-sex marriages. The legal effect of the court ruling was curtailed by another voter initiative called Proposition 8 later that year. Proposition 8 was upheld by the California Supreme Court in 2009, holding that same-sex couples have all the rights of heterosexual couples, except the right to the "designation" of marriage. On 26 June 2013, the Supreme Court ruled in Hollingsworth v. Perry that Proposition 8 was unconstitutional, allowing same-sex marriages to resume in California. Federal recognition In 1996, the U.S. Congress passed the Defense of Marriage Act (DOMA). Section 2 of DOMA defined marriage as a union between a man and a woman, and its purpose was to enable states to deny recognition of same-sex marriages performed in other states. Section 3 of DOMA also denied federal recognition to same-sex couples who were legally married under state law. On 26 June 2013, the U.S. Supreme Court declared Section 3 of DOMA to be unconstitutional in United States v. Windsor. The court said that the provision was "a deprivation of the equal liberty of persons that is protected by the Fifth Amendment." With this ruling the federal government recognized same-sex marriages performed by states that allowed same-sex marriage. It also affected several federal rights, including enabling a U.S. citizen to petition a same-sex spouse for immigration. The Court in the United States v. Windsor case did not, however, address the constitutionality of DOMA Section 2, which allowed a state to deny recognition of same-sex marriages granted in