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Bills · 2025-2026 Regular Session

AB 311

Died at session end Official bill text Atom feed

Relating to: changing an individual’s sex on a birth certificate.

Vital statistics

  1. Introduced, stopped here
  2. Passes Assembly, not reached
  3. Passes Senate, not reached
  4. Governor signs, not reached
  5. Law, not reached

Unfamiliar terms? Glossary

What this bill does

Plain-language analysis by the nonpartisan Legislative Reference Bureau

Current law allows for changes to an individual’s sex on a birth record due to a surgical sex-change procedure or to correct an error on a birth record, subject to certain requirements. Under this bill, an individual’s sex on a birth record may not be changed due to a surgical sex-change procedure. Moreover, the bill prohibits any person from changing an individual’s sex on a birth record to a sex other than the individual’s biological sex. The bill also prohibits a court from ordering a change to an individual’s sex on a birth record to a sex other than the individual’s biological sex. Under the bill, “biological sex” means the biological state of being male or female based on sex chromosomes.

Sponsors

Introduced by: Allen (R) , Behnke (R) , Brill (R) , Callahan (R) , Dittrich (R) , Duchow (R) , Goeben (R) , Gustafson (R) , Maxey (R) , Murphy (R) , Nedweski (R) , Penterman (R) , Piwowarczyk (R) , Steffen (R) , Wichgers (R)

3 cosponsors

Nass (R) , Quinn (R) , Wanggaard (R)

Registered lobbying interests · 8

Organizations that registered lobbying activity on this bill with the Wisconsin Ethics Commission. Registration means interest, not a position for or against. Official record

Votes

Assembly: Report Assembly Amendment 1 adoption recommended by Committee on Judiciary, Ayes 5, Noes 3

Passed 5–3 Jan 15, 2026 official source full page

No individual roll call was recorded for this vote. Committee votes and some older sessions record totals only.

Assembly: Report passage as amended recommended by Committee on Judiciary, Ayes 5, Noes 3

Passed 5–3 Jan 15, 2026 official source full page

No individual roll call was recorded for this vote. Committee votes and some older sessions record totals only.

Full history

  1. Jun 6, 2025 · Assembly

    Introduced by Representatives Brill, Maxey, Goeben, Wichgers, Piwowarczyk, Gustafson, Steffen, Penterman, Duchow, Nedweski, Callahan, Murphy, Dittrich, Allen and Behnke; cosponsored by Senators Nass, Wanggaard and Quinn

  2. Jun 6, 2025 · Assembly

    Read first time and referred to Committee on Judiciary

  3. Sep 22, 2025 · Assembly

    Assembly Amendment 1 offered by Representative Brill

  4. Jan 8, 2026 · Assembly

    Public hearing held

  5. Jan 14, 2026 · Assembly

    Executive action taken

  6. Jan 15, 2026 · Assembly

    Report Assembly Amendment 1 adoption recommended by Committee on Judiciary, Ayes 5, Noes 3

  7. Jan 15, 2026 · Assembly

    Report passage as amended recommended by Committee on Judiciary, Ayes 5, Noes 3

  8. Jan 15, 2026 · Assembly

    Referred to committee on Rules

  9. Mar 23, 2026 · Assembly

    Failed to pass pursuant to Senate Joint Resolution 1