I'll ask my son if the delays are TSA induced. I doubt he'll have the answer as he works at Love Field, a much smaller airport than DFW or O'Hare.
My understanding it was at all airports in Chicago, and most definitely TSA related. Its not weather related, its not a holiday period, or anything to do with the airlines, although they are very upset by the TSA delays, because it screws up the airline passengers. so the question again is - why now???