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.
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Introduced, passed
Mar 5, 2025
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Committee, passed
Approved
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Assembly vote, passed
Passed 50 to 43
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Senate vote, passed
Passed 18 to 15
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Governor, stopped here
Vetoed Mar 31, 2026.
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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”
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The same bill was also filed in the Senate as SB 157. That version died when the session ended.
Terms on this page
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. 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
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 Hide the names
Authors (25)
- Scott Allen · Republican, Assembly
- Brent Jacobson · Republican, Assembly
- Elijah Behnke · Republican, Assembly
- Lindee Brill · Republican, Assembly
- Rob Brooks · Republican, Assembly
- Calvin Callahan · Republican, Assembly
- Barbara Dittrich · Republican, Assembly
- Joy Goeben · Republican, Assembly
- Chanz Green · Republican, Assembly
- Rick Gundrum · Republican, Assembly
- Karen Hurd · Republican, Assembly
- Dan Knodl · Republican, Assembly
- Rob Kreibich · Republican, Assembly
- Dave Maxey · Republican, Assembly
- Dave Murphy · Republican, Assembly
- Jeff Mursau · Republican, Assembly
- Amanda Nedweski · Republican, Assembly
- Adam Neylon · Republican, Assembly
- Jerry O'Connor · Republican, Assembly
- Will Penterman · Republican, Assembly
- David Steffen · Republican, Assembly
- Duke Tucker · Republican, Assembly
- Ron Tusler · Republican, Assembly
- Robin Vos · Republican, Assembly
- Chuck Wichgers · Republican, Assembly
Signed on in support (6)
- Chris Kapenga · Republican, Senate
- Steve Nass · Republican, Senate
- Jim Piwowarczyk · Republican, Assembly
- Romaine Quinn · Republican, Senate
- Cory Tomczyk · Republican, Senate
- Eric Wimberger · Republican, Senate
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 Hide the names
D: Democrat, R: Republican
Yes (50)
- Adam Neylon (R, 15)
- Alex Dallman (R, 39)
- Amanda Nedweski (R, 32)
- Barbara Dittrich (R, 99)
- Ben Franklin (R, 88)
- Bob Donovan (R, 61)
- Bob Wittke (R, 63)
- Brent Jacobson (R, 87)
- Calvin Callahan (R, 35)
- Chanz Green (R, 74)
- Chuck Wichgers (R, 84)
- Cindi Duchow (R, 97)
- Clint Moses (R, 92)
- Dan Knodl (R, 24)
- Dave Armstrong (R, 67)
- Dave Murphy (R, 56)
- David Steffen (R, 4)
- Dean Kaufert (R, 53)
- Duke Tucker (R, 75)
- Elijah Behnke (R, 6)
- Gus Gustafson (R, 55)
- Jeff Mursau (R, 36)
- Jerry O'Connor (R, 60)
- Jessie Rodriguez (R, 21)
- Jim Piwowarczyk (R, 98)
- Joel Kitchens (R, 1)
- John Spiros (R, 86)
- Joy Goeben (R, 5)
- Karen Hurd (R, 69)
- Kevin Petersen (R, 57)
- Lindee Brill (R, 27)
- Mark Born (R, 37)
- Nancy VanderMeer (R, 70)
- Pat Snyder (R, 85)
- Paul Melotik (R, 22)
- Paul Tittl (R, 25)
- Rick Gundrum (R, 58)
- Rob Brooks (R, 59)
- Rob Kreibich (R, 28)
- Rob Summerfield (R, 68)
- Rob Swearingen (R, 34)
- Robin Vos (R, 33)
- Ron Tusler (R, 3)
- Scott Krug (R, 72)
- Shae Sortwell (R, 2)
- Todd Novak (R, 51)
- Tony Kurtz (R, 41)
- Travis Tranel (R, 49)
- Treig Pronschinske (R, 29)
- Tyler August (R, 31)
No (43)
- Alex Joers (D, 81)
- Amaad Rivera-Wagner (D, 90)
- Andrew Hysell (D, 48)
- Angela Stroud (D, 73)
- Angelina Cruz (D, 62)
- Angelito Tenorio (D, 14)
- Ann Roe (D, 44)
- Ben DeSmidt (D, 65)
- Brienne Brown (D, 43)
- Christian Phelps (D, 93)
- Christine Sinicki (D, 20)
- Clint Anderson (D, 45)
- Darrin Madison (D, 10)
- Deb Andraca (D, 23)
- Francesca Hong (D, 76)
- Greta Neubauer (D, 66)
- Jenna Jacobson (D, 50)
- Jill Billings (D, 95)
- Joan Fitzgerald (D, 46)
- Jodi Emerson (D, 91)
- Joe Sheehan (D, 26)
- Kalan Haywood (D, 16)
- Karen DeSanto (D, 40)
- Karen Kirsch (D, 7)
- Lee Snodgrass (D, 52)
- Lisa Subeck (D, 79)
- Lori Palmeri (D, 54)
- Margaret Arney (D, 18)
- Maureen McCarville (D, 42)
- Mike Bare (D, 80)
- Priscilla Prado (D, 9)
- Randy Udell (D, 47)
- Renuka Mayadev (D, 77)
- Robyn Vining (D, 13)
- Ryan Clancy (D, 19)
- Ryan Spaude (D, 89)
- Sequanna Taylor (D, 11)
- Shelia Stubbs (D, 78)
- Supreme Moore Omokunde (D, 17)
- Sylvia Ortiz-Velez (D, 8)
- Tara Johnson (D, 96)
- Tip McGuire (D, 64)
- Vinnie Miresse (D, 71)
Didn't vote (6)
- Dave Maxey (R, 83)
- Russell Goodwin (D, 12)
- Scott Allen (R, 82)
- Shannon Zimmerman (R, 30)
- Steve Doyle (D, 94)
- Will Penterman (R, 38)
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 Hide the names
D: Democrat, R: Republican
Yes (18)
- André Jacque (R, 1)
- Chris Kapenga (R, 33)
- Cory Tomczyk (R, 29)
- Dan Feyen (R, 20)
- Devin LeMahieu (R, 9)
- Eric Wimberger (R, 2)
- Howard Marklein (R, 17)
- Jesse James (R, 23)
- John Jagler (R, 13)
- Julian Bradley (R, 28)
- Mary Felzkowski (R, 12)
- Patrick Testin (R, 24)
- Rachael Cabral-Guevara (R, 19)
- Rob Hutton (R, 5)
- Rob Stafsholt (R, 10)
- Romaine Quinn (R, 25)
- Steve Nass (R, 11)
- Van Wanggaard (R, 21)
No (15)
- Bob Wirch (D, 22)
- Brad Pfaff (D, 32)
- Chris Larson (D, 7)
- Dianne Hesselbein (D, 27)
- Dora Drake (D, 4)
- Jamie Wall (D, 30)
- Jeff Smith (D, 31)
- Jodi Habush Sinykin (D, 8)
- Kelda Roys (D, 26)
- Kristin Dassler-Alfheim (D, 18)
- LaTonya Johnson (D, 6)
- Mark Spreitzer (D, 15)
- Melissa Ratcliff (D, 16)
- Sarah Keyeski (D, 14)
- Tim Carpenter (D, 3)
Official motion: “CONCURRENCE”. Official record · This vote on its own page
What happened
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May 13, 2026
The veto stood. Lawmakers didn't override it.
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Mar 31, 2026
The governor vetoed it.
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Mar 26, 2026
Sent to the governor.
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Feb 11, 2026
The Senate passed it too, 18 to 15.
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Jan 16, 2026
The committee voted to recommend passing it, 3 to 2.
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Jan 14, 2026
The committee held a public hearing.
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Mar 27, 2025
Sent to the Senate Committee on Government Operations, Labor and Economic Development.
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Mar 20, 2025
The Senate received it.
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Mar 20, 2025
The Assembly passed it, 50 to 43.
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Mar 13, 2025
Sent to the Assembly Committee on Rules.
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Mar 13, 2025
The committee voted to recommend passing it, 10 to 5.
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Mar 12, 2025
The committee held a public hearing.
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Mar 6, 2025
1 more representative signed on in support.
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Mar 5, 2025
Sent to the Assembly Committee on Health, Aging and Long-Term Care.
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Mar 5, 2025
Introduced in the Assembly.
See the official record, word for word Hide the official record
- 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
- Mar 5, 2025 · Assembly
Read first time and referred to Committee on Health, Aging and Long-Term Care
- Mar 6, 2025 · Assembly
Representative Piwowarczyk added as a coauthor
- Mar 12, 2025 · Assembly
Public hearing held
- Mar 13, 2025 · Assembly
Executive action taken
- Mar 13, 2025 · Assembly
Report passage recommended by Committee on Health, Aging and Long-Term Care, Ayes 10, Noes 5
- Mar 13, 2025 · Assembly
Referred to committee on Rules
- Mar 18, 2025 · Assembly
Placed on calendar 3-20-2025 by Committee on Rules
- Mar 20, 2025 · Assembly
Read a second time
- Mar 20, 2025 · Assembly
Ordered to a third reading
- Mar 20, 2025 · Assembly
Rules suspended
- Mar 20, 2025 · Assembly
Read a third time and passed, Ayes 50, Noes 43
- Mar 20, 2025 · Assembly
Ordered immediately messaged
- Mar 20, 2025 · Senate
Received from Assembly
- Mar 27, 2025 · Senate
Read first time and referred to committee on Government Operations, Labor and Economic Development
- Jan 14, 2026 · Senate
Public hearing held
- Jan 16, 2026 · Senate
Executive action taken
- Jan 16, 2026 · Senate
Report concurrence recommended by Committee on Government Operations, Labor and Economic Development, Ayes 3, Noes 2
- Jan 16, 2026 · Senate
Available for scheduling
- Feb 9, 2026 · Senate
Placed on calendar 2-11-2026 pursuant to Senate Rule 18(1)
- Feb 11, 2026 · Senate
Read a second time
- Feb 11, 2026 · Senate
Ordered to a third reading
- Feb 11, 2026 · Senate
Rules suspended to give bill its third reading
- Feb 11, 2026 · Senate
Read a third time and concurred in, Ayes 18, Noes 15
- Feb 11, 2026 · Senate
Ordered immediately messaged
- Feb 12, 2026 · Assembly
Received from Senate concurred in
- Feb 16, 2026 · Assembly
LRB correction
- Feb 16, 2026 · Assembly
Report correctly enrolled on 2-16-2026
- Mar 26, 2026 · Assembly
Presented to the Governor on 3-26-2026
- Mar 31, 2026 · Assembly
Report vetoed by the Governor on 3-31-2026
- May 12, 2026 · Assembly
Placed on calendar 5-12-2026 pursuant to Joint Rule 82 (2)(a)
- 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.
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
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