(Washington Examiner) A recent memo by the Health and Human Services Department to other federal agencies in the Trump administration called for adopting a narrow definition of gender that would effectively roll back many legal protections granted to transgender people during the Obama administration.

HHS called on government agencies to adopt a definition of gender that used “a biological basis that is clear, grounded in science, objective and administrable.” The department said that gender should be defined as simply male or female from birth and be considered immutable, according to a New York Times report.

“The sex listed on a person’s birth certificate, as originally issued, shall constitute definitive proof of a person’s sex unless rebutted by reliable genetic evidence,” the memo proposed. Such a definition would sweep away a series of administrative definitions by the Obama administration that extended protected status to transgender people at schools, prisons, and other federally funded institutions.