Same-sex marriage: Legal from Jun 26, 2015 to now.
In a ruling by the US Supreme Court, all 50 states must now issue marriage licenses for same sex couples and recognize same-sex marriages performed in any state.
LGBT employment discrimination: No protections from past to -0001.
At this time the Federal government has made no laws preventing discrimination at a national level to all employers, but the EEOC does prevent it in Federal government jobs. Since the federal government has no laws protecting public and private sector employees, it is marked as no protections since this designation fits more in line with how this classification is used in other regions. However, the US does have states and cities where discrimination is illegal for all employers.
Blood donations by MSMs: Banned (indefinite deferral) from 1983 to Dec 21, 2015.
Though the deferral impacts all MSMs who have had sex with a man since 1977, the policy did not go into effect until 1983. The policy applied retroactively to 1977.
Originally banned in a measure on a ballot, but Arkansas Supreme Court Overruled. Any unmarried individual may petition for adoption, and any married individuals must petition jointly before the court. While the Supreme Court of Arkansas has struck down bans to limit same-sex adoption on privacy grounds, all adoption cases are handled on a case by case basis before a lower court judge. Lower courts have a history of hostile rulings for same-sex adoptive parents as displayed in Larson v. Larson, 902 S.W.2d 254 (App. 1995).
Same-sex marriage: Varies by Region from Jun 26, 2013 to Jun 26, 2015.
Legal status is extremely variable based on the individual state. Recognized at a Federal level, but not in all states, for all intents and purposes except Social Security. Social Security is based on the state of residence's recognition of marital status.
LGBT discrimination: Illegal in some contexts from Jan 2011 to Jun 14, 2020.
In all Federal positions, discrimination based on sexual orientation is against the law in instances related to work and employment. In non-federal government jobs, it is based on the state's laws as no federal protections currently exist for non-employees. Additionally, even federal employees could face discrimination unrelated to work in areas of life such as housing, health care, etc. In fact, many groups are advocating the repeal of protections or the introduction of laws to permit discrimination.
Right to change legal gender: Varies by Region from Jan 2013 to now.
From a Federal standpoint, you can change your gender with proof that you have undergone treatment for a gender change (surgery no longer required in any agency as of June 2013)
Homosexual activity: Legal from Jan 1, 1942 to Jun 20, 1991.
The Swiss Penal Code introduced in 1942 allowed same sex acts between adults (above 20 years old), but punished homosexual intercourse with people between 16 and 20 years old (while allowing heterosexual acts)