A federal judge issued a preliminary injunction preventing Idaho from enforcing a law that criminalizes transgender restroom use.Judge Amanda Brailsford ruled the legislation unconstitutionally vague after plaintiffs represented by the ACLU and Lambda Legal filed suit.The decision grants provisional class-action status to residents while Governor Brad Little and Attorney General Raul Labrador prepare to appeal.Proponents of the ruling believe this action protects citizens from arbitrary arrest while the underlying constitutional battle proceeds.