The Trump administration is proposing sweeping changes to the rules governing the 2030 US Census, including a requirement that could make questions about biological sex mandatory for respondents, a change critics say could effectively force transgender people to disclose their trans status to the federal government.
What? It’s not optional. It’s one of the most widely-used examples of compulsory civic actions
its also used as a basis for federal funding although given trump is pretty much getting rid of that could be moot.