The proposed bill amends Chapter 41, Title 18 of the Idaho Code by adding a new section, 18-4117, which prohibits individuals from entering restrooms or changing rooms designated for the opposite biological sex in government-owned buildings or public accommodations. Violators of this law would be guilty of a misdemeanor, punishable by up to one year in county jail. If a person is convicted of this offense a second time within five years, they would face felony charges, with potential imprisonment of up to five years.

The bill outlines specific exceptions to this prohibition, allowing entry for individuals performing custodial services, providing medical or law enforcement assistance, or in cases of emergency. Additional exceptions include the use of single-user facilities, urgent needs for restroom access, and accompanying individuals in need of assistance. The bill also defines "changing room" to include facilities where individuals may be undressed in the presence of others. An emergency clause is included, making the act effective on July 1, 2026.