The Kansas Women’s Bill of Rights, enacted as Senate Bill 180 in 2023 and expanded by Senate Bill 244 in 2026, defines “sex” throughout Kansas law as a person’s biological sex at birth. That single definition reaches into birth certificates, driver’s licenses, restrooms and locker rooms in government buildings, prison housing, school athletics, domestic violence shelters, and the way state agencies collect data. It is currently being enforced while court challenges continue.
What the Law Defines
Whenever Kansas law, regulation, or policy refers to a person’s “sex,” SB 180 says that word means the person’s biological sex at birth, either male or female.1Kansas Legislature. Kansas Code – Senate Bill 180 – Women’s Bill of Rights “Woman” and “girl” refer exclusively to human females; “man” and “boy” refer exclusively to human males. The statute also draws a line between “equal” and “same,” specifying that women can receive legal protections equal to men’s without those protections being identical.
Any school district, public school, state agency, or political subdivision that collects vital statistics for anti-discrimination compliance or public health data must identify each person as either male or female at birth.2Kansas Legislative Research Department. Summary of SB 180 – Women’s Bill of Rights That covers crime statistics, economic research, and health records. Kansas government agencies cannot record a person’s sex as anything other than what was documented at birth.
Birth Certificates and Driver’s Licenses
Before SB 180, Kansas operated under a 2019 federal consent agreement that required the state to let transgender residents update their birth certificates. After SB 180 took effect, Attorney General Kris Kobach asked U.S. District Judge Daniel Crabtree to lift that agreement. The judge did, ruling that Kansas officials were no longer required to change transgender people’s birth certificates to reflect gender identity. Whether SB 180 itself is constitutional, the judge noted, is a question for state courts.
Driver’s licenses were fought over separately. SB 180’s original text did not mention them, and Governor Laura Kelly’s administration kept allowing transgender Kansans to update the gender marker on their license. Kobach sued in state court to stop that practice. In June 2025 the Kansas Court of Appeals held he was unlikely to prevail on his reading of SB 180.
The legislature answered with SB 244, enacted over another Kelly veto on February 18, 2026, which explicitly extended the biological-sex definition to driver’s licenses. The Kansas Department of Revenue now requires anyone whose license does not match their sex at birth to surrender the current credential and receive a replacement reflecting their birth sex. No additional documentation is required; the agency’s records already show when a prior gender marker change was made.3Kansas Department of Revenue. Gender Reclassification The compliance deadline is March 25, 2026. After that date, drivers whose licenses do not match their birth sex face penalties if stopped by law enforcement.
Restrooms, Locker Rooms, and Other Sex-Segregated Spaces
SB 180 declares that separating people by biological sex in certain settings is “substantially related to the important governmental objectives of protecting the health, safety and privacy of individuals.”1Kansas Legislature. Kansas Code – Senate Bill 180 – Women’s Bill of Rights The law covers:
- School and public-program athletic teams and competitions, which can be restricted to participants matching biological sex at birth.
- Prisons and detention facilities, where housing assignments can be based on birth sex rather than gender identity.
- Domestic violence shelters and rape crisis centers, which can limit admission to individuals of the same biological sex.
- Restrooms, locker rooms, and any facility where “biology, safety, or privacy are implicated.”
SB 244 added an enforcement mechanism for the restroom provision in government buildings: a private right of action letting anyone sue a person they believe is violating the restriction for up to $1,000 in damages. That provision is being challenged in state court.
The restroom and locker room rules also sit in tension with federal workplace guidance. The Occupational Safety and Health Administration has long interpreted its sanitation standards to require that transgender employees have access to facilities matching their gender identity. How that interacts with Kansas law at a workplace located in a government building covered by SB 244 has not been resolved.
How the Law Was Enacted and Expanded
Governor Kelly vetoed SB 180 on April 24, 2023. The legislature overrode her veto within days, with the Senate voting 28–12 on April 26 and the House voting 84–40 on April 27.4Kansas Legislature. SB 180 Bills and Resolutions The law took effect July 1, 2023. Kelly said publicly that her administration would not implement key provisions, and the standoff between her office and the legislature drove most of the litigation that followed.
SB 244 in 2026 closed the gaps the executive branch had used to keep issuing updated driver’s licenses. It also added the private right of action for restroom violations that SB 180 had lacked.
Where the Law Stands in Court
Judge Crabtree’s federal ruling on birth certificates went Kobach’s way but left the broader constitutional question to state courts. The June 2025 Court of Appeals decision on driver’s licenses went against Kobach, then became moot when SB 244 passed.
SB 244 itself drew an immediate challenge. In Doe v. State of Kansas, filed in the District Court of Douglas County, two anonymous transgender plaintiffs argue that SB 244 violates the Kansas Constitution’s protections for personal autonomy, privacy, equal protection, due process, and free speech. As of March 2026 the court denied a temporary restraining order, so the law is being enforced while the case proceeds.
How Federal Precedent Fits In
The Supreme Court held in Bostock v. Clayton County (2020) that firing an employee for being gay or transgender violates Title VII’s ban on sex-based employment discrimination.5Supreme Court of the United States. Bostock v. Clayton County The majority opinion explicitly declined to address bathrooms, locker rooms, or athletics, which is where SB 180 operates.
In United States v. Skrmetti (2025), the Court upheld Tennessee’s restrictions on certain medical treatments for transgender minors and held that the law did not classify based on sex in a way that triggers heightened constitutional scrutiny.6Supreme Court of the United States. United States v. Skrmetti The Court distinguished Bostock’s “but-for” causation analysis, holding it did not apply in the equal protection context. A separate 2025 ruling upheld the federal government’s authority to require birth sex on passports.
Federal courts are increasingly treating biological sex classifications as subject to rational basis review, the lowest level of constitutional scrutiny. That trend favors laws like SB 180 in federal court. State constitutional claims, including those in Doe v. State of Kansas, operate under different standards, and Kansas courts may read their own constitution’s privacy and autonomy protections more broadly than federal equal protection doctrine.