The lawsuit charges that the Indiana law is unconstitutional in that it unlawfully interferes with federal power and authority over immigration matters in violation of the Supremacy Clause of the U.S. Constitution and authorizes unreasonable seizures and arrests in violation of the Fourth Amendment.
The lawsuit was filed in the U.S. District Court for the Southern District of Indiana on behalf of three individual plaintiffs who would be subject to harassment or arrest under the law. Some state lawmakers opposed the extreme law at the time it was passed, saying it would increase law enforcement costs and deter both employers and employees from coming to the state. Indiana University also expressed concerns that the law would discourage enrollment and academic participation, noting that the institution hosts thousands of foreign national students, faculty members and visitors each school year.
The court temporarily blocked key provisions of the law in June of 2011, just a month before it was scheduled to take effect. In November of that same year, the ACLU and partners filed a motion for summary judgment in the lawsuit, which was granted in March of 2013, when the court permanently enjoined key portions of the law.