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Defining Male and Female Act of 2025
To establish clear and consistent biological definitions of male and female.
Summary
This bill amends federal law to establish legal definitions for sex-related terms, including 'male', 'female', 'man', 'woman', 'boy', 'girl', and related family terms. Under the bill, 'male' refers to a person with a reproductive system that produces sperm, and 'female' refers to a person with a reproductive system that produces eggs. The bill also defines 'gender identity' as an internal and subjective sense of self that is separate from biological sex. It specifies that gender identity shall not be recognized by the Federal Government as a replacement for sex in federal law. These definitions would apply to the interpretation of all federal statutes, regulations, and agency actions.
AI-generated plain-language summary of the bill text — neutral, and may be imperfect. See the full text below for the exact wording.
Sponsor (1)
7 cosponsors
Money behind the sponsor
Top reported contributors to Mary E. Miller’s campaign committee (2024 cycle) — who funds the bill’s sponsor, not a claim about this bill. Data from FEC.
- NULL $22,349
- SAULSBURY INDUSTRIES $13,200
- THOMPSON THRIFT DEVELOPMENT $11,600
- KASPAR LAW COMPANY $6,600
- INDECK ENERGY SERVICES $6,600
Organizations whose employees gave the most — itemized individual contributions grouped by the donor’s reported employer (FEC Schedule A). Full finance for Mary E. Miller → · Outside spending →
Actions (2)
- Mar 26, 2025 Referred to the House Committee on the Judiciary. · house
- Mar 26, 2025 Introduced in House
Similar bills (6)
Bills with similar text or summary — includes reintroductions across Congresses. Ranked by semantic similarity of the bill text (computed locally); a neutral discovery aid, not a claim the bills are duplicates.
Text versions (1)
Bills are re-published as they move (Introduced → Reported → Engrossed → Enrolled …). Each stage below is a separate text; pick two to see what changed. Data from Congress.gov.
Full text
IN THE HOUSE OF REPRESENTATIVES
March 26, 2025
Mrs. Miller of Illinois (for herself, Ms. Tenney, Mr. Onder, Mr. Moore of Alabama, and Mr. Estes) introduced the following bill; which was referred to the Committee on the Judiciary
A BILL
To establish clear and consistent biological definitions of male and female.
Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled,
SECTION 1. SHORT TITLE.
This Act may be cited as the “Defining Male and Female Act of 2025”.
SEC. 2. DEFINITION OF “SEX”, “MALE”, “FEMALE”, AND RELATED TERMS.
Chapter 1 of title 1, United States Code, is amended by adding at the end the following:
“SEC. 9. DEFINITION OF ‘SEX’, ‘MALE’, ‘FEMALE’, AND RELATED TERMS.
“In determining the meaning of any Act of Congress, or of any ruling, regulation, or interpretation of the various departments and Federal agencies of the United States, the term—
“(1) ‘boy’ means a minor human male;
“(2) ‘father’ means a male parent;
“(3) ‘female’, when used to refer to a natural person, means a person belonging, at conception, to the sex characterized by a reproductive system with the biological function of producing eggs (ova);
“(4) ‘gender identity’ means an identity that reflects an internal and subjective sense of self, disconnected from biological reality and sex and existing on an indeterminate continuum, and, because such an identity does not provide a meaningful basis for identification for purposes of Federal law, the term shall not be recognized by the Federal Government as a replacement for sex;
“(5) ‘girl’ means a minor human female;
“(6) ‘male’, when used to refer to a natural person, means a person belonging, at conception, to the biological sex characterized by a reproductive system with the biological function of producing sperm;
“(7) ‘man’, except when used as a generic reference to human beings, means an adult human male;
“(8) ‘mother’ means a female parent;
“(9) ‘sex’, when referring to a natural person’s individual’s sex, means the person’s immutable biological classification as either male or female, as biologically determined and defined by this section; and
“(10) ‘woman’ means an adult human female.”. <all>
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