Among the actions President Donald Trump took Monday to overturn much of the previous administration’s agenda, Trump signed an executive order requiring that the U.S. recognize only two genders. 

“The erasure of sex in language and policy has a corrosive impact not just on women but on the validity of the entire American system,” the order states. 

The order provides a definition of “woman” as being an adult human female, and “girls” as a juvenile human female. Likewise, under Trump’s order, “man” is defined as adult human males and “boy” as juvenile human males. 

The order also requires the Secretary of Health and Human Services to provide the federal government and the public with clear guidance on expanding sex-based definitions that recognize women as biologically distinct from men.