Idaho has passed the nation’s most comprehensive bathroom law, extending biological sex requirements beyond government buildings to include private businesses, a move that could set the standard for conservative states nationwide.

Unprecedented Private Business Coverage

House Bill 752 requires people to use bathrooms, locker rooms, and changing rooms matching their biological sex in both government buildings and private businesses with public facilities. The legislation passed the state legislature in late March 2026 with a veto-proof majority and awaits the governor’s signature. This marks the first time any state has applied such restrictions broadly to private businesses, closing what supporters call the corporate activism loophole that previously allowed biological males to access women’s facilities.

Serious Criminal Penalties

The law carries significant consequences for violations. Anyone knowingly and willfully entering a facility designated for the opposite biological sex faces a misdemeanor charge with up to one year in jail for a first offense. Repeat offenses escalate to felony charges carrying up to five years in prison. The legislation includes nine specific exceptions for emergency situations, janitorial work, helping children, or cases of dire need where no other options exist.

Broader State Movement

At least 19 states now have laws restricting bathroom access based on biological sex in schools and public places. Three other states, Florida, Kansas, and Utah, have criminalized violations in certain circumstances. However, Idaho’s bill stands alone in its comprehensive application to private businesses. The law applies to any public bathroom, locker room, or changing room in any business across the state.

What This Means

The Idaho legislation represents the culmination of a decade-long pushback against policies allowing individuals to use facilities inconsistent with their biological sex. Supporters argue the law protects women and girls in vulnerable spaces while establishing clear statewide standards that prevent conflicting local policies. The veto-proof majority suggests strong legislative support that reflects growing conservative momentum on this issue across nearly half of American states.