In 2021, the United States removed documentation requirements for changing passport gender markers and allowed nonbinary passport holders to choose an 'X' gender marker.
January 01, 2021
high
temporal
Policy change expanded options for gender markers on U.S. passports and removed medical-documentation prerequisites.
The United States federal government began allowing changes to passport sex markers with medical documentation in the early 1990s.
January 01, 1990
high
temporal
Change in U.S. passport policy permitting sex-marker updates conditional on medical evidence.
Sex markers began appearing on U.S. passports in the mid-1970s.
January 01, 1975
high
temporal
Historical introduction of sex/gender markers on U.S. passports.