Bisexual erasure (or bisexual invisibility) is the tendency to ignore, remove, falsify, or reexplain evidence of bisexuality in culture, history, academia, news media and other primary sources. In its most extreme form, bisexual erasure includes denying that bisexuality exists. It is often a manifestation of biphobia, although it does not necessarily involve overt antagonism.
Prior to Obergefell, same-sex marriage was legal to at least some degree in thirty-eight states, one territory (Guam) and the District of Columbia; of the states, Missouri, Kansas, and Alabama had restrictions. Until United States v. Windsor, it was only legal in 12 states and District of Columbia. Beginning in July 2013, over forty federal and state courts cited Windsor to strike down state bans on the licensing or recognition of same-sex marriage. Missouri recognized same-sex marriages from out of state and same-sex marriages licensed by the City of St. Louis under two separate state court orders; two other jurisdictions issued such licenses as well. In Kansas, marriage licenses were available to same-sex couples in most counties, but the state did not recognize their validity. Some counties in Alabama issued marriage licenses to same-sex couples for three weeks until the state Supreme Court ordered probate judges to stop doing so. That court's ruling did not address the recognition of same-sex marriages already licensed in Alabama, but referred to them as "purported 'marriage licenses'". In two additional states, same-sex marriages were previously legal between the time their bans were struck down and then stayed. Michigan recognized the validity of more than 300 marriage licenses issued to same-sex couples and those marriages. Arkansas recognized the more than 500 marriage licenses issued to same-sex couples there, and the federal government had not taken a position on Arkansas's marriage licenses.
In 2019, Three transgender people who identify as male lost their legal bid on Friday to be recognised as such on their Hong Kong identity cards, in a setback for the LGBT movement to achieve equal rights. While expressing sympathy, High Court judge Mr Justice Thomas Au Hing-cheung ruled against the three applicants, Henry Tse, Q and R, They have all been legally recognised as men by the British government but are unable to get their gender changed on Hong Kong ID cards. The judge said that a complete sex change would be the only “workable way” for the local government to determine a person’s gender. Although the trio, all born female, identify as men, and have had their breasts removed and undergone hormone therapy, they all still have their uterus and ovaries – which was the point of contention in their legal challenges against the city’s commissioner of registration.
Civil rights campaigning in support of marriage without distinction as to sex or sexual orientation began in the 1970s. In 1972, the now overturned Baker v. Nelson saw the Supreme Court of the United States decline to become involved. The issue became prominent from around 1993, when the Supreme Court of Hawaii ruled in Baehr v. Lewin that it was unconstitutional under the state constitution for the state to abridge marriage on the basis of sex. That ruling led to federal and state actions to explicitly abridge marriage on the basis of sex in order to prevent the marriages of same-sex couples from being recognized by law, the most prominent of which was the 1996 federal DOMA. In 2003, the Massachusetts Supreme Judicial Court ruled in Goodridge v. Department of Public Health that it was unconstitutional under the state constitution for the state to abridge marriage on the basis of sex. From 2004 through to 2015, as the tide of public opinion continued to move towards support of same-sex marriage, various state court rulings, state legislation, direct popular votes (referendums and initiatives), and federal court rulings established same-sex marriage in thirty-six of the fifty states.
On 22 May 2015, Ireland held a referendum. The referendum proposed to add to the Irish Constitution: "marriage may be contracted in accordance with law by two persons without distinction as to their sex". The proposal was approved with 62% of voters supporting same-sex marriage. On 29 August 2015, Irish President Michael D. Higgins signed the result of the May referendum into law, which made Ireland the first country in the world to approve same-sex marriage at a nationwide referendum. Same-sex marriage became formally legally recognised in Ireland on 16 November 2015.
In the current debate around influences on sexual orientation, biological explanations have been questioned by social scientists, particularly by feminists who encourage women to make conscious decisions about their life and sexuality. A difference in attitude between homosexual men and women has also been reported, with men more likely to regard their sexuality as biological, "reflecting the universal male experience in this culture, not the complexities of the lesbian world." There is also evidence that women's sexuality may be more strongly affected by cultural and contextual factors.
Historically, bisexuality has largely been free of the social stigma associated with homosexuality, prevalent even where bisexuality was the norm. In Ancient Greece pederasty was not problematic as long as the men involved eventually married and had children. In many world cultures, homosexual affairs have been quietly accepted among upper-class men of good social standing (particularly if married), and heterosexual marriage has often been used successfully as a defense against accusations of homosexuality. On the other hand, there are bisexuals who marry or live with a heterosexual partner because they prefer the complementarity of different sexes in cohabiting and co-parenting but have felt greatly enriched by homosexual relationships alongside the marriage in both monogamous and "open" relationships.