I just returned from Europe last Friday, and went through customs in Chicago. All international arrivals go through their isolated Terminal 5. You go through customs, which I was able to do by answering one or two brief questions, and then pick up your luggage. If you have a connecting flight, which I did, you can re-check your luggage without a lot of issues. After Customs and re-checking luggage in Terminal 5, I boarded a train to another terminal, where I once again had to go through security. Aside from the basic metal detectors and removal of shoes, belts and laptops, I wasn't asked to do anything unusual. No Backscatter machines or pat-downs.
The NKI has a different layout. Connecting passengers go through security right after their incoming customs checks. Exiting passenger go through that same portal. Exiting passengers leave the secure area at some point AFTER they get rechecked.
I thought so.
I sometimes fly international in/out of ORD and do the same thing. No TSA screening until you re-enter for your connecting flight.
I think the guy posting his experience is not being truthful