The first time I went through ORD was on February, 4 degrees, -5 degrees windchill and still, it was working absolutely normal. Fairly clean and organized. I only had to wait about 25 min for my luggage on the carousels because the plane’s cargo door’s hydraulic pipes got frozen due the insane low Chicago’s temperatures, but still, its not the airport’s fault. On the way back I got there by train (Chicago’s "L") and I got impressed by the organization and optimal structure made to integrate the train station to the terminal’s accesses. Elevators for the ones with baggage (like me) and fairly easy and well signed directions to all terminals. The only problem is that you have to pay three dollars for a SIMPLE trolley! But still, the very well organized terminals and not crowded check-in lines made all the small problems go away. I won’t even say anything about the politeness of the security officers because the lack of it in this area is something that you really need to endure in the United States. Still, they were MUCH less rude than the Miami International ones…: I didn’t feel like a criminal. Finally, I found out, already inside my plane to Nashville, that I rushed SO much only to know that the plane would be delayed due the intense snowstorm over Chicago at that time and there were not enough ice-removing trucks to all planes and I had to wait over an hour inside that tiny American Eagle Jet… but anyway… I didn’t get stressed once I knew that the storm wasn’t being disgraceful only for me. There are things that we can’t prevent, so take it easy!