PRIA Logo™
119-hr-2378119th Congress

Defining Male and Female Act of 2025

Sponsored By: Representative Miller, Mary E. [R-IL-15]

Introduced

Summary

Defines 'sex' as an immutable, biologically determined category for federal law. It would add a new Section 9 to Chapter 1 of Title 1, United States Code, inserting statutory definitions for 'male' and 'female' (each tied to biological characteristics at conception), plus 'man', 'woman', 'boy', 'girl', 'father', and 'mother', and directing federal laws, regulations, and agency interpretations to use those definitions while stating that 'gender identity' shall not be recognized by the Federal Government as a replacement for sex.

Personalized for You

How does this bill affect your finances?

Personalize government policy and PRIA will tell you what this bill means for your household, plus every other piece of legislation we track. PRIA reads each provision against your financial profile to show you exactly what matters to your wallet.

Free to download

Bill Overview

Analyzed Economic Effects

1 provisions identified: 0 benefits, 0 costs, 1 mixed.

New federal definitions of sex and gender

If enacted, this bill would set one federal set of definitions for sex-related terms. It would define boy, girl, man, woman, mother, and father by biological sex. "Male" and "female" would be based on sex at conception, tied to making sperm or eggs. "Gender identity" would not be recognized as a replacement for sex in federal law. These definitions would guide all federal laws, rules, and rulings and would take effect upon enactment.

Sponsors & CoSponsors

Sponsor

Miller, Mary E. [R-IL-15]

IL • R

Cosponsors

  • Rep. Tenney, Claudia [R-NY-24]

    NY • R

    Sponsored 3/26/2025

  • Rep. Onder, Robert F. [R-MO-3]

    MO • R

    Sponsored 3/26/2025

  • Rep. Moore, Barry [R-AL-1]

    AL • R

    Sponsored 3/26/2025

  • Rep. Estes, Ron [R-KS-4]

    KS • R

    Sponsored 3/26/2025

  • Rep. Biggs, Sheri [R-SC-3]

    SC • R

    Sponsored 4/1/2025

  • Rep. Harris, Andy [R-MD-1]

    MD • R

    Sponsored 4/1/2025

  • Rep. Greene, Marjorie Taylor [R-GA-14]

    GA • R

    Sponsored 9/3/2025

Roll Call Votes

No roll call votes available for this bill.

View on Congress.gov
Back to Legislation