Hi, I think you may just be able to make it. The chances of your making it are just ten percent, to tell you frankly, on this connecting flight. Of course do not hurry the immigration officer. You see, Chicago is a big airport,( maybe the biggest in the world ) and I am pretty sure you will have to change terminals, which itself may take a little while. In case you miss the connecting flight, not to worry, even though the reservation system may show flight full here, for the later flight, there will always be one or two seats to spare, and the airline staff at the airport will accommodate you if you explain. Best of luck
