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Bills from the 2025–26 session

Assembly Bill 311

Changing an individual’s sex on a birth certificate

Topics: Vital statistics

Stopped before the full Assembly voted

The recommended passing it, but the full Assembly never voted on it. The last day for votes this session was Mar 19, 2026. To try again, a lawmaker would have to start a new bill.

  1. Introduced, passed

    Jun 6, 2025

  2. Committee, passed

    Approved

  3. Assembly vote, stopped here

    Stopped here. The full Assembly never voted on it.

  4. Senate vote, not reached

  5. Governor, not reached

  6. Law, not reached

Latest entry in the official record, Mar 23, 2026: “Failed to pass pursuant to ⁠”

Read the bill

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The same bill was also filed in the Senate as SB 312. That version died when the session ended.

What it would have done

Summary by the , the Legislature's nonpartisan drafting office. It's their wording, not ours.

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.

Who's behind it

15 representatives are its ⁠. All 15 are Republicans.

3 more lawmakers ⁠.

See all 18 names

Authors (15)

Signed on in support (3)

Versions and amendments

Every text the Legislature printed for this bill, including proposed changes. Each opens on the Legislature's site.

How lawmakers voted

There were 2 votes on this bill.

Assembly Committee on Judiciary vote on an amendment

Passed, 5 to 3 · Jan 15, 2026

No member-by-member record exists for this vote. Committee votes and some older sessions record totals only.

Official motion: “Report Assembly Amendment 1 adoption recommended by Committee on Judiciary, Ayes 5, Noes 3”. Official record · This vote on its own page

Assembly Committee on Judiciary vote to recommend it

Passed, 5 to 3 · Jan 15, 2026

No member-by-member record exists for this vote. Committee votes and some older sessions record totals only.

Official motion: “Report passage as amended recommended by Committee on Judiciary, Ayes 5, Noes 3”. Official record · This vote on its own page

What happened

  1. Mar 23, 2026

    The session ended, and the bill died with it.

  2. Jan 15, 2026

    Sent to the Assembly Committee on Rules.

  3. Jan 15, 2026

    The committee voted to recommend passing it, 5 to 3.

  4. Jan 8, 2026

    The committee held a public hearing.

  5. Jun 6, 2025

    Sent to the Assembly Committee on Judiciary.

  6. Jun 6, 2025

    Introduced in the Assembly.

See the official record, word for word
  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

Terms on this page

Committee

A small group of lawmakers that looks at a bill first. Most bills never leave committee.

More in the glossary

Senate Joint Resolution 1

The session's calendar. Any bill not passed by its last voting day dies.

Official term: Failed to pass pursuant to SJR 1. More in the glossary

Legislative Reference Bureau

The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.

Official term: LRB analysis. More in the glossary

Author

A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.

Official term: Author, coauthor. More in the glossary

Signed on in support

Lawmakers who back a bill without being one of its authors, often from the other chamber.

Official term: Cosponsor. More in the glossary

Roll call

A vote where each lawmaker's yes or no is recorded by name.

Official term: Roll call vote. More in the glossary

From the Wisconsin Legislature's official record, checked Sep 15, 2026. See the source

Committee

A small group of lawmakers that looks at a bill first. Most bills never leave committee.

Senate Joint Resolution 1

The session's calendar. Any bill not passed by its last voting day dies.

Official term: Failed to pass pursuant to SJR 1

Legislative Reference Bureau

The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.

Official term: LRB analysis

Author

A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.

Official term: Author, coauthor

Signed on in support

Lawmakers who back a bill without being one of its authors, often from the other chamber.

Official term: Cosponsor

Roll call

A vote where each lawmaker's yes or no is recorded by name.

Official term: Roll call vote