Such a mark can be indicated by persons who do not consider themselves to be either male or female gender.
Since April 11, American citizens will be able to indicate in the “gender” column not “male” or “female,” but “X” when applying for a passport. This is stated in a statement issued on Thursday by U.S. Secretary of State Antony Blinken.
“Starting on April 11, U.S. citizens will be able to choose “X” as a gender marker in their applications for a U.S. passport, and this option will become available for other types of documents next year,” he said.
Blinken announced the intention of the U.S. authorities to allow applicants for a passport or consular certificates of birth abroad (CRBA) to choose independently what to indicate in the “gender” column in the summer of 2021. As he noted at the time, “medical confirmation will no longer be required if the choice of gender” does not match the data in other identity documents. Persons who do not consider themselves to be either male or female gender will be able to indicate in the appropriate column “X.”