On Thursday, the state Supreme Court heard a case that hinges on whether a Freedom of Information Act lawsuit can be decided using the law as it was written when the suit was filed or if a new version of the law holds more authority.In 2013, appellant Institute for Justice filed a FOIA request for documents held by the Illinois Department of financial and professional regulation, which denied the request on the grounds of six exemptions.The Institute eventually filed a lawsuit in 2014. While the case was pending, the …