Six transgender Idaho residents filed a federal lawsuit on Thursday challenging a new state law that prohibits them from using sex-designated public restrooms in government buildings and private businesses.

The lawsuit was filed by attorneys from the American Civil Liberties Union, its Idaho affiliate, and Lambda Legal. The plaintiffs are asking a federal judge to strike down the law entirely.

The new Idaho law restricts transgender individuals from using public restrooms that align with their gender identity, instead requiring them to use facilities corresponding to their biological sex assigned at birth. The law applies to both public buildings operated by the state and local governments as well as private businesses that are open to the public.

The legal challenge argues that the bathroom restrictions violate constitutional rights and federal civil rights protections for transgender individuals. Civil rights organizations have increasingly challenged similar laws enacted in various states across the country.

Idaho joins several other states that have enacted legislation restricting transgender individuals' access to public facilities. The lawsuit represents the latest legal battle over transgender rights and bathroom access policies that have become a focal point in ongoing debates over LGBTQ+ rights in state legislatures nationwide.