Illinois requires anyone who possesses a firearm or ammunition to have an FOID (Firearm Owners ID) card. Possession without an FOID is a class 3 felony. The catch here is that you must have an IL drivers license or IL ID card in order to acquire an IL FOID.
Ms. Mishaga is a resident of Ohio who visits friends in IL several times a year. Ms. Mishaga applied for an FOID on March 27, 2010 and again on May 17, 2010. Both times she was denied because she did not have (and cannot legally have) an IL DL or ID card.
Ms. Mishaga is suing to have the IL statutes on FOID overturned as they act as a functional firearms ban, thereby depriving nonresidents their 2A rights, Right to Travel and equal protection. Read more here