Going to Chicago tomorrow

[JimmyC4]

elrey781, I'd also suggest that you spend some study/research time at http://www.handgunlaw.us/. When you go there, on the left margin, click on "Who Honors My Permit", which will yield a wealth of info for you.

Check out the laws, especially regarding eligibility to carry in IN, which I expect you'll pass through on your trip.

Good luck, and be careful.

[DefensiveCarry.com]

[ispcapt]

Really?

What federal law would that be ?

Volker-McClure Act. Also known as the Firearm Owners Protection Act of 1986 or often just called FOPA. There are stipulations in the law. It's not just a blanket 'can carry anywhere' law. Do a websearch for the statute.

As far as the OP's question -
No you cannot carry in IL. There is no CCW in IL. Doesn't matter if you have a CCW permit in Ohio or any other state. IL does not recognize nor honor any permit. Carrying a loaded firearm can be a felony depending on the circumstances when stopped. And that's when things get real ugly. You don't want a felony charge.
Check the IL State Police (Not Highway Patrol) website. http://www.isp.state.il.us/foid/ There is a FAQ section where about 1/2 way down it talks about out of state persons transporting thru IL. Also check the link to the municipal ordinances which are more restrictive than state law.
Generally, as long as your firearm is unloaded and in a case. The case has to be designed for a gun, completely encloses the gun, and have some type of clasp device to close the case, ie, tie, zipper, snap, etc. The ammo does not have to be stored separately from the gun. It can be carried in the same case, however, no ammo or loaded magazine can be inserted into the gun. It is also recommended the gun be inaccessible to the occupants of the vehicle if at all possible. Some vehicles that's not possible but make an attempt to place it where it is least accessible. This will do 2 things for you. It will put you in compliance with FOPA as far as transporting and it will keep the firearm out of sight in case you are stopped or you stop somewhere and it's then out of sight of the public.