Civil liberties groups on Thursday filed a lawsuit seeking to block Georgia from enforcing a law that cracks down on illegal immigration, saying it violates state and federal law.

The groups claim they “face an imminent threat of harm” if the new law is enforced. They are asking a federal judge to declare the law unconstitutional and to block state authorities from enforcing it. The groups also plan to ask for a preliminary injunction to stop the law from going into effect.