@leo3487 The US doesn't have one of those national language bureaus like France does, but here's the closest we've got-- (it is not run by activists)
Merriam-Webster dictionary
Definitions #3c and 3d under the entry for "they"
https://www.merriam-webster.com/dictionary/they
c —used to refer to a single person whose gender is intentionally not revealed
A student was found with a knife and a BB gun in their backpack Monday, district spokeswoman Renee Murphy confirmed. The student, whose name has not been released, will be disciplined according to district policies, Murphy said. They also face charges from outside law enforcement, she said.
d —used to refer to a single person whose gender identity is nonbinary (see NONBINARY sense c)
I knew certain things about … the person I was interviewing.… They had adopted their gender-neutral name a few years ago, when they began to consciously identify as nonbinary—that is, neither male nor female. They were in their late 20s, working as an event planner, applying to graduate school.
