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Bills from the 2025–26 session

Assembly Bill 104

Prohibiting gender transition medical intervention for individuals under 18 years of age

Topics: Medical Examining Board, Medical service, Nurses, Physician, Youth

Vetoed by the governor

Both chambers passed it, and the governor vetoed it on Mar 31, 2026. Lawmakers did not ⁠, so it stands.

  1. Introduced, passed

    Mar 5, 2025

  2. Committee, passed

    Approved

  3. Assembly vote, passed

    Passed 50 to 43

  4. Senate vote, passed

    Passed 18 to 15

  5. Governor, stopped here

    Vetoed Mar 31, 2026.

  6. Law, not reached

Latest entry in the official record, May 13, 2026: “Failed to pass notwithstanding the objections of the Governor pursuant to Joint Rule 82”

Read the governor's veto message · All vetoes this session

Read the bill

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The same bill was also filed in the Senate as SB 157. 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.

This bill prohibits health care providers from engaging in, causing the engagement in, or making referrals for, certain medical intervention practices upon an individual under 18 years of age if done for the purpose of changing the minor’s body to correspond to a sex that is discordant with the minor’s biological sex. The prohibitions under the bill do not apply to any of the following: 1) a health care provider providing a service in accordance with a good faith medical decision of a parent or guardian of a minor born with a medically verifiable genetic disorder of sex development; 2) the treatment of any infection, injury, disease, or disorder that has been caused by or exacerbated by the performance of a gender transition medical procedure, whether or not that procedure was performed in accordance with state and federal law; or 3) any procedure undertaken because the minor suffers from a physical disorder, physical injury, or physical illness that would, as certified by a physician, place the minor in imminent danger of death or impairment of a major bodily function unless surgery is performed.

Under the bill, the Board of Nursing, the Medical Examining Board, and the Physician Assistant Affiliated Credentialing Board are required to investigate any allegation that any person licensed or certified by the respective boards has violated any of the prohibitions on engaging in, causing the engagement in, or making certain referrals for the medical intervention practices described in the bill. Upon a finding by the Board of Nursing, the Medical Examining Board, or the Physician Assistant Affiliated Credentialing Board that the holder of a license or certificate has violated any of these prohibitions, the bill requires the Board of Nursing, the Medical Examining Board, or the Physician Affiliated Credentialing Board to revoke that person’s license or certificate.

Who's behind it

25 representatives are its ⁠. All 25 are Republicans.

6 more lawmakers ⁠.

See all 31 names

Authors (25)

Signed on in support (6)

How lawmakers voted

There were 4 votes on this bill.

Assembly Committee on Health vote to recommend it

Passed, 10 to 5 · Mar 13, 2025

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

Official motion: “Report passage recommended by Committee on Health, Aging and Long-Term Care, Ayes 10, Noes 5”. Official record · This vote on its own page

Assembly vote to pass it

Passed, 50 to 43 · Mar 20, 2025 · 6 didn't vote

See how each of the 99 representatives voted

D: Democrat, R: Republican

Yes (50)

No (43)

Official motion: “PASSAGE”. Official record · This vote on its own page

Senate Committee on Government Operations vote to recommend it

Passed, 3 to 2 · Jan 16, 2026

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

Official motion: “Report concurrence recommended by Committee on Government Operations, Labor and Economic Development, Ayes 3, Noes 2”. Official record · This vote on its own page

Senate vote to pass it

Passed, 18 to 15 · Feb 11, 2026

See how each of the 33 senators voted

D: Democrat, R: Republican

Official motion: “CONCURRENCE”. Official record · This vote on its own page

What happened

  1. May 13, 2026

    The veto stood. Lawmakers didn't override it.

  2. Mar 31, 2026

    The governor vetoed it.

  3. Mar 26, 2026

    Sent to the governor.

  4. Feb 11, 2026

    The Senate passed it too, 18 to 15.

  5. Jan 16, 2026

    The committee voted to recommend passing it, 3 to 2.

  6. Jan 14, 2026

    The committee held a public hearing.

  7. Mar 27, 2025

    Sent to the Senate Committee on Government Operations, Labor and Economic Development.

  8. Mar 20, 2025

    The Senate received it.

  9. Mar 20, 2025

    The Assembly passed it, 50 to 43.

  10. Mar 13, 2025

    Sent to the Assembly Committee on Rules.

  11. Mar 13, 2025

    The committee voted to recommend passing it, 10 to 5.

  12. Mar 12, 2025

    The committee held a public hearing.

  13. Mar 6, 2025

    1 more representative signed on in support.

  14. Mar 5, 2025

    Sent to the Assembly Committee on Health, Aging and Long-Term Care.

  15. Mar 5, 2025

    Introduced in the Assembly.

See the official record, word for word
  1. Mar 5, 2025 · Assembly

    Introduced by Representatives Allen, Vos, Behnke, Brill, Brooks, Callahan, Dittrich, Goeben, Green, Gundrum, Hurd, B. Jacobson, Knodl, Kreibich, Maxey, Murphy, Mursau, Nedweski, Neylon, O'Connor, Penterman, Steffen, Tucker, Tusler and Wichgers; cosponsored by Senators Tomczyk, Kapenga, Nass, Quinn and Wimberger

  2. Mar 5, 2025 · Assembly

    Read first time and referred to Committee on Health, Aging and Long-Term Care

  3. Mar 6, 2025 · Assembly

    Representative Piwowarczyk added as a coauthor

  4. Mar 12, 2025 · Assembly

    Public hearing held

  5. Mar 13, 2025 · Assembly

    Executive action taken

  6. Mar 13, 2025 · Assembly

    Report passage recommended by Committee on Health, Aging and Long-Term Care, Ayes 10, Noes 5

  7. Mar 13, 2025 · Assembly

    Referred to committee on Rules

  8. Mar 18, 2025 · Assembly

    Placed on calendar 3-20-2025 by Committee on Rules

  9. Mar 20, 2025 · Assembly

    Read a second time

  10. Mar 20, 2025 · Assembly

    Ordered to a third reading

  11. Mar 20, 2025 · Assembly

    Rules suspended

  12. Mar 20, 2025 · Assembly

    Read a third time and passed, Ayes 50, Noes 43

  13. Mar 20, 2025 · Assembly

    Ordered immediately messaged

  14. Mar 20, 2025 · Senate

    Received from Assembly

  15. Mar 27, 2025 · Senate

    Read first time and referred to committee on Government Operations, Labor and Economic Development

  16. Jan 14, 2026 · Senate

    Public hearing held

  17. Jan 16, 2026 · Senate

    Executive action taken

  18. Jan 16, 2026 · Senate

    Report concurrence recommended by Committee on Government Operations, Labor and Economic Development, Ayes 3, Noes 2

  19. Jan 16, 2026 · Senate

    Available for scheduling

  20. Feb 9, 2026 · Senate

    Placed on calendar 2-11-2026 pursuant to Senate Rule 18(1)

  21. Feb 11, 2026 · Senate

    Read a second time

  22. Feb 11, 2026 · Senate

    Ordered to a third reading

  23. Feb 11, 2026 · Senate

    Rules suspended to give bill its third reading

  24. Feb 11, 2026 · Senate

    Read a third time and concurred in, Ayes 18, Noes 15

  25. Feb 11, 2026 · Senate

    Ordered immediately messaged

  26. Feb 12, 2026 · Assembly

    Received from Senate concurred in

  27. Feb 16, 2026 · Assembly

    LRB correction

  28. Feb 16, 2026 · Assembly

    Report correctly enrolled on 2-16-2026

  29. Mar 26, 2026 · Assembly

    Presented to the Governor on 3-26-2026

  30. Mar 31, 2026 · Assembly

    Report vetoed by the Governor on 3-31-2026

  31. May 12, 2026 · Assembly

    Placed on calendar 5-12-2026 pursuant to Joint Rule 82 (2)(a)

  32. May 13, 2026 · Assembly

    Failed to pass notwithstanding the objections of the Governor pursuant to Joint Rule 82

Terms on this page

Veto override

Lawmakers can still pass a bill the governor vetoed, but it takes two-thirds of each chamber.

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

Veto override

Lawmakers can still pass a bill the governor vetoed, but it takes two-thirds of each chamber.

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