I live in Illinois too and I run no front plate. Everyone in my house doesn't have a front plate and we've never had an issue, even when parking on the streets of Chicago. If you really do want to run a plate, I know AM sells a foldable one.
2012 Mustang GT Premium Convertible Ebony, Charcoal Leather, HID, 19" Machined Rims, Shaker 500, Comfort Package, Remote Start, Rear Sensing Package, GT/CS Valance, Hushpower AB, Pedestal Spoiler, Hood Scoop, Side Scoops, BOSS 302 Side Exhaust, Roush CAI, Custom '5.0' faux gas cap Delivered: 9-19-2011
2002 Mustang GT Convertible True Blue Metallic Traded In: 9-19-11 I'll miss her :-(
DD: 2013 Taurus LTD Ingot Silver, 302A Spec, Moonroof, Navigation, 20" Wheels