Sponsors (7)
The bill prevents taxpayer‑funded invasive sex‑altering interventions on most vertebrate animals, protecting animals and public sensibilities, but it also restricts certain federally funded research—potentially curtailing scientific inquiry, funding, and translational health and conservation benefits.
Taxpayers and the public are protected from having federal research dollars used for invasive sex‑altering experiments on most vertebrate animals, and certain animal populations (including those in rural communities) are spared interventions that disrupt development or natural reproductive functions.
Scientists with federal grants lose the ability to perform studies that manipulate sex characteristics in non‑human vertebrates, narrowing research scope and limiting academic and training opportunities.
Universities and research institutions risk losing federal funding for ongoing or planned animal studies, creating the possibility of project cancellations, sunk costs, and impacts on federal employees and research staff.
Translational and conservation research that manipulates physiology could be unintentionally barred, reducing knowledge that might benefit human and animal health systems and slowing medical or conservation advances.
Based on analysis of 2 sections of legislative text.
Bars federal funding for research that uses interventions to make non‑human vertebrate animals’ bodies not correspond with their biological sex.
Official title: To prohibit the availability of Federal funds for certain animal research, and for other purposes.
Introduced July 17, 2025 by Nancy Mace · Last progress July 17, 2025
Prohibits use of any federal funds to conduct, support, or fund research that intentionally changes a non-human vertebrate animal’s body so it no longer corresponds to its biological sex. The ban covers experiments that use drugs, hormones, surgery, or other interventions to disrupt development, inhibit natural functions, or modify physical appearance in most vertebrate animals, with a narrow exception for species that naturally change sex or are hermaphroditic. The law is short (two sections): it names the act and defines the covered research, qualified animals, and an exclusion for animals that naturally change sex or possess both reproductive organs.