(ABC 6 News) – Iowa schools prepare to pull books off their shelves before the New Year to comply with Iowa’s “book ban” law.

The law, passed last spring, bans any books in school libraries that describe or visually depict a sexual act with exclusions only for religious books like the Bible.

But today, the Iowa chapter of the ACLU’s challenged the new law. The ACLU argues the new law violates the First and Fourteenth Amendments.

But as the deadline draws closer, many have expressed uncertainty, with anxiety surrounding possible penalties for not removing any book that might meet the criteria.