A federal court in Idaho had already previously struck down another bill that sought to prevent gender markers from being changed on birth certificates in 2018, when a federal judge issued a ruling blocking the state from prohibiting changes to gender markers on birth certificates, as it violated the Constitution's Equal Protection Clause.
It is shameful that Idaho @GovernorLittle is encouraging discrimination against trans youth. Doing it on the eve of #TransDayOfVisibility adds insult to injury. #HB500
— National Center for Transgender Equality (@TransEquality) March 31, 2020