On Wednesday, the Department of Health and Human Services issued a release titled "Defining Sex: Guidance for Federal Agencies, External Partners, and the Public Implementing Executive Order 14168, Defending Women from Gender Ideology Extremism and Restoring Biological Truth to the Federal Government." (full text). The 1½ page memo says in part:
There are only two sexes, female and male, because there are only two types of gametes. An individual human is either female or male based on whether the person is of the sex characterized by a reproductive system with the biological function of producing eggs (ova) or sperm....
Recognizing the immutable and biological nature of sex is essential to ensure the protection of women’s health, safety, private spaces, sports, and opportunities. Restoring biological truth to the Federal government is critical to scientific inquiry, public safety, morale, and trust in government itself.
The Release goes on to define the terms "sex", "female", "male". "woman", "girl", "man", "boy", "mother", and "father",