Wisconsin 2025-2026 Regular Session

Wisconsin Assembly Bill AB400

Introduced
8/29/25  
Refer
8/29/25  
Report Pass
1/15/26  
Refer
1/15/26  

Caption

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

Impact

The bill significantly alters existing laws regarding healthcare for minors by imposing strict liability standards on providers facilitating gender transition procedures. It requires comprehensive documentation and certifications from multiple healthcare professionals before such treatments can be administered, which includes demonstrating a consistent perceived gender over at least two years. This places significant barriers on minors seeking gender-affirming care, potentially raising questions regarding access to critical healthcare services for transgender youth.

Summary

Assembly Bill 400 establishes a legal framework for civil lawsuits against healthcare providers who perform gender transition procedures on minors. Specifically, it aims to create a cause of action for individuals under 18 who claim to have suffered injuries as a result of such procedures. The bill highlights that any physical, psychological, emotional, or physiological harm inflicted by a gender transition treatment would allow the minor or their guardians to sue for damages. Importantly, the law stipulates that these actions must be initiated before the individual reaches the age of 33 years.

Contention

Controversy surrounds AB400, particularly regarding its implications for the rights of transgender minors and their access to necessary health care. Proponents argue that the bill ensures that minors are not subjected to irreversible medical procedures without adequate safeguards, referencing claims of potential medical harms associated with such treatments. Opponents contend that the bill could obstruct necessary medical care for transgender youth and might expose healthcare providers to unnecessary legal risks for following established medical guidelines. The discussions reflect deep divisions in public health and civil rights communities regarding the balance between safeguarding vulnerable populations and ensuring access to gender-affirming treatments.

Companion Bills

WI SB405

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

Previously Filed As

WI SB405

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

WI HB1033

Prohibiting gender transition procedures for minors and coverage for gender transition procedures for minors.

WI HB2146

Actions for medical malpractice; minors, gender transition procedures.

WI HB1444

Gender transition procedures for minors.

WI SB843

Prohibiting minor medical procedures that cause permanent and irreparable damage due to certain sex transitioning procedures; prescribing penalties; and establishing a private right of action.

WI S0270

Prohibits gender transition procedures for all minors, uses of public funds, discipline for health care providers, a 30 year statute of limitation, after reaching age of majority, and right to a civil action for damages.

WI S2598

Prohibits gender transition procedures for all minors, uses of public funds, discipline for health care providers, a 30 year statute of limitation, after reaching age of majority, and right to a civil action for damages.

WI HB3130

Gender transition procedures; health services for minors; definition; referrals and aiding and abetting; punitive damages; exempting immunity protection for employees in certain actions; emergency.

WI SB1551

No Subsidies for Gender Transition Procedures Act

WI HB3205

No Subsidies for Gender Transition Procedures Act

Similar Bills

CA AB308

An act to add Chapter 10 (commencing with Section 8300) to Division 8 of the Welfare and Institutions Code, relating to behavioral health.

US SB312

Jamie Reed Protecting Our Kids from Child Abuse Act

AZ HB2085

gender transition; minors; prohibitions.

AZ SB1095

gender transition; minors; prohibitions

DE SB55

An Act To Amend Title 16 Of The Delaware Code Relating To Gender Transition Procedures.

US HB2202

End Taxpayer Funding of Gender Experimentation Act of 2025

US SB977

End Taxpayer Funding of Gender Experimentation Act of 2025

AZ SB1014

insurance; gender surgeries; documentation; reports