Bill · H.R. 2378· House(119-HR-2378)
Defining Male and Female Act of 2025
- Introduced
- 3/26/2025
- Last activity
- 3/26/2025 — Referred to the House Committee on the Judiciary.
- Sponsored by
- Mary Miller
- Cosponsors
- - 7 - 0
- Introduced
- In Committee
What this bill would do
The "Defining Male and Female Act of 2025" aims to establish clear and consistent biological definitions for specific terms across all federal laws, rulings, and regulations. It amends Title 1 of the United States Code to provide specific definitions for terms like male, female, boy, girl, man, and woman. The bill defines sex as an immutable biological classification determined at conception. It also defines gender identity as an internal sense of self that is disconnected from biological reality. Finally, the act states that gender identity shall not be recognized by the Federal Government as a replacement for sex.
Yes
Does this give the federal government more power?+5
The bill expands federal statutory definitions that apply to all federal agencies and rulings.
The opposite
Would LGBTQ people be better off under this?-8
The bill actively excludes the recognition of gender identity from federal legal purposes, which directly targets this community.
Does this expand the rights of LGBTQ people?-7
The bill explicitly declines to recognize gender identity as a valid basis for federal law, which negatively impacts transgender and non-binary individuals.
Does this narrow the gap between how men and women are treated?-5
By restricting gender definitions to biological sex at conception, the bill may negatively impact legal protections for those whose identities do not align with biological sex.
Who it would affect, and how
Potential Positive Impacts for People
-
Standardized Definitions: By establishing clear and consistent biological definitions for terms like 'male', 'female', 'boy', 'girl', 'man', and 'woman', the bill seeks to provide a uniform standard for any Act of Congress, ruling, regulation, or federal agency interpretation (Section 2).
-
Clarity on Biological Sex: The bill defines 'sex' as an immutable biological classification and defines 'female' based on a reproductive system with the biological function of producing eggs, and 'male' based on a reproductive system with the biological function of producing sperm (Section 2).
Potential Negative Impacts for People
-
Non-recognition of Gender Identity: The bill defines 'gender identity' as an identity disconnected from biological reality and states that it shall not be recognized by the Federal Government as a replacement for sex (Section 2).
-
Fixed Biological Classifications: The bill classifies 'sex' as an immutable biological classification determined at conception, which defines terms like 'male' and 'female' based on specific reproductive functions (Section 2).
Groups and Interests Ranking
Every group the model scored this bill for, from -10 to +10. Hover a score for the reason it gave.
- Social Issues And Justice
- Improves L G B T Q Rights-7Improves Gender Equality-5
- Demographic And Interest Groups
- Good For L G B T Q Community-8
- Governance And Ideology
- Increases Federal Power+5
- 9/3/2025
- 1 Cosponsor added.
- 4/1/2025
- 2 Cosponsors added.
- 3/26/2025
- Referred to the House Committee on the Judiciary.
- 4 Cosponsors added.
- Introduced in House
One bill Congress.gov lists as related to this one — companions in the other chamber, earlier versions, and bills this one absorbed or was folded into.
Sheri BiggsRepublican · South Carolina
Ron EstesRepublican · Kansas
Marjorie GreeneRepublican · Georgia
Andy HarrisRepublican · Maryland
Barry MooreRepublican · Alabama
Robert OnderRepublican · Missouri
Claudia TenneyRepublican · New York