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Bills from the 2025–26 session

Senate Bill 405

A civil cause of action for a minor injured by a gender transition procedure

Topics: Court: Procedure, Damage (personal injury), Medical service, Mental health, 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

    Aug 28, 2025

  2. Committee, passed

    Approved

  3. Senate vote, passed

    Passed Feb 11, 2026

  4. Assembly vote, passed

    Passed 53 to 45

  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 Assembly as AB 400. 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 establishes a civil cause of action against a health care provider who performs a gender transition procedure, as defined in the bill, on an individual who is under 18 years of age and who is injured, including any physical, psychological, emotional, or physiological injury, by the gender transition procedure or related treatment or the aftereffects of the gender transition procedure or related treatment. Under the bill, such an action must be commenced before the individual attains the age of 33 years.

The bill provides that it is a defense to an action under the bill if all of the following occur before a health care provider performs a gender transition procedure on an individual who is under 18 years of age:

Read the full summary

1. The health care provider documents the individual’s perceived gender or perceived sex for at least two continuous years, and the individual’s perceived gender or perceived sex is invariably inconsistent with the individual’s biological sex throughout the two-year period.

2. To the extent that the individual suffers from a mental health concern, at least one mental health professional and one other health care provider certifies in writing that the gender transition procedure is the only way to treat the mental health concern.

3. At least one mental health professional and one other health care provider certifies in writing that the individual suffers from no other mental health concerns.

4. The health care provider receives the voluntary and informed consent of the individual and the individual’s parent or legal guardian by providing them, both orally and in writing, with a notice, the contents are which are prescribed in the bill, at least 30 days before the first treatment of the gender transition procedure and during every subsequent medical visit for treatment during the following six months.

Who's behind it

4 senators are its ⁠. All 4 are Republicans.

17 more lawmakers ⁠.

See all 21 names

Authors (4)

Signed on in support (17)

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 3 votes on this bill.

Senate Committee on Health vote on an amendment

Passed, 3 to 2 · Dec 12, 2025

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

Official motion: “Report adoption of Senate Amendment 1 recommended by Committee on Health, Ayes 3, Noes 2”. Official record · This vote on its own page

Senate Committee on Health vote to recommend it

Passed, 3 to 2 · Dec 12, 2025

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 Health, Ayes 3, Noes 2”. Official record · This vote on its own page

Assembly vote to pass it

Passed, 53 to 45 · Feb 12, 2026 · 1 didn't vote

See how each of the 99 representatives voted

D: Democrat, R: Republican

Yes (53)

No (45)

Didn't vote (1)

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 12, 2026

    The Assembly passed it too, 53 to 45.

  5. Feb 12, 2026

    “Read” (the official wording)

  6. Feb 12, 2026

    The Assembly received it.

  7. Feb 11, 2026

    The Senate passed it.

  8. Feb 11, 2026

    The Senate adopted it.

  9. Dec 12, 2025

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

  10. Dec 12, 2025

    “Report adoption of Senate Amendment 1 recommended by Committee on Health, Ayes 3, Noes 2” (the official wording)

  11. Nov 5, 2025

    The committee held a public hearing.

  12. Aug 28, 2025

    Sent to the Senate Committee on Health.

  13. Aug 28, 2025

    Introduced in the Senate.

See the official record, word for word
  1. Aug 28, 2025 · Senate

    Introduced by Senators Hutton, Kapenga, Bradley and Nass; cosponsored by Representatives Nedweski, Steffen, Maxey, Brill, Green, Gustafson, O'Connor, Kreibich, Piwowarczyk, Penterman, Mursau, Allen, Dittrich, Knodl, Murphy, Wichgers and Behnke

  2. Aug 28, 2025 · Senate

    Read first time and referred to Committee on Health

  3. Nov 5, 2025 · Senate

    Public hearing held

  4. Dec 10, 2025 · Senate

    Senate Amendment 1 offered by Senator Hutton

  5. Dec 12, 2025 · Senate

    Executive action taken

  6. Dec 12, 2025 · Senate

    Report adoption of Senate Amendment 1 recommended by Committee on Health, Ayes 3, Noes 2

  7. Dec 12, 2025 · Senate

    Report passage as amended recommended by Committee on Health, Ayes 3, Noes 2

  8. Dec 12, 2025 · Senate

    Available for scheduling

  9. Feb 9, 2026 · Senate

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

  10. Feb 11, 2026 · Senate

    Read a second time

  11. Feb 11, 2026 · Senate

    Senate Amendment 1 adopted

  12. Feb 11, 2026 · Senate

    Ordered to a third reading

  13. Feb 11, 2026 · Senate

    Rules suspended to give bill its third reading

  14. Feb 11, 2026 · Senate

    Read a third time and passed

  15. Feb 11, 2026 · Senate

    Ordered immediately messaged

  16. Feb 12, 2026 · Assembly

    Received from Senate

  17. Feb 12, 2026 · Assembly

    Read

  18. Feb 12, 2026 · Assembly

    Rules suspended to withdraw from Senate message and take up

  19. Feb 12, 2026 · Assembly

    Read a second time

  20. Feb 12, 2026 · Assembly

    Ordered to a third reading

  21. Feb 12, 2026 · Assembly

    Rules suspended

  22. Feb 12, 2026 · Assembly

    Read a third time and concurred in, Ayes 53, Noes 45

  23. Feb 12, 2026 · Assembly

    Ordered immediately messaged

  24. Feb 13, 2026 · Senate

    Received from Assembly concurred in

  25. Feb 20, 2026 · Senate

    Report correctly enrolled

  26. Mar 26, 2026 · Senate

    Presented to the Governor on 3-26-2026

  27. Mar 31, 2026 · Senate

    Report vetoed by the Governor on 3-31-2026

  28. May 12, 2026 · Senate

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

  29. May 13, 2026 · Senate

    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.

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