On May 19, 2003, the U.S. Supreme Court declined to strike down a Maine law that imposes strict controls on the price of all prescription drugs sold in the State. The decision was a setback for WLF, which filed a brief in September 2002, urging that the law be struck down. WLF argued that the Maine law is void because it conflicts with federal laws regulating the sale of prescription drugs. Although the Court said that the plaintiffs were not entitled to a preliminary injunction against enforcement of the law, it remanded the case to the district court for trial. The Court said that the plaintiff can win at trial if it can demonstrate that the Maine law reduces access by Medicaid recipients to prescription drugs.