A federal judge ruled on Monday that sections of an Arkansas law, which sought to impose criminal penalties on librarians and booksellers for distributing “harmful” material to children, were unconstitutional.

The law, known as the Arkansas Act 372, was signed into law last year by Republican governor Sarah Huckabee Sanders. It was challenged by a coalition of organizations in the state, leading to a lengthy legal battle that concluded this week.

Two sections of Act 372 subjected librarians and booksellers to jail time for distributing material that is deemed “harmful to children”. Proponents of the law, including Sanders, said the law was put in place to “protect children” from “obscene” material.

“Act 372 is just common sense: schools and libraries shouldn’t put obscene material in front of our kids,” Sanders said in a statement to KATV-TV. “I will work with Attorney General Griffin to appeal this ruling and uphold Arkansas law.”

The governor signed the bill into law in March 2023, and a coalition of organizations in the state, including the Central Arkansas Library System in Little Rock and the ACLU of Arkansas, challenged it last year, saying the law was vague, overly broad and that the fear of criminal penalties would have a chilling effect on librarians across the state. A federal court temporarily blocked the enforcement of the two sections in question, while the law was being challenged in court.

The two sections that were struck down on Monday had established a criminal misdemeanor for “furnishing a harmful item to a minor”, and would have required local governments to create oversight boards to review challenged material. The organizations opposing the law argued that local officials, at their own discretion, could censor whichever books and material they pleased.

“This is a significant milestone on a long, sometimes rocky road we were obligated to travel after the passage of Act 372,” said Nate Coulter, executive director of the Central Arkansas Library System, in response to Monday’s ruling.

“We took that path to protect our librarians from prosecution for doing their jobs and to prevent some local elected officials from censoring library books they did not feel were ‘appropriate’ for our patrons to read.”

In 2004, a federal judge struck down a similar law. The year prior, the state passed a law that required booksellers and librarians to hide materials deemed “harmful to minors”. It was deemed unconstitutional after legal challenges.