TSA defers to Delta at DFW: Consumerist Thread on Flying without ID

The Consumerist has a thread on flying without ID. Unfortunately, their answer isn't very helpful--basically they advise that even though ID isn't necessary--run out GET ID as soon as possible anyway. Some of the commenters share interesting experiences about flying without ID. Unfortunately, the experiences described don't have any date information, so they won't be posted here directly. There is one particularly relevant post TSA deferred to Delta airlines on deciding about ID. This seems recent because TSA was in fact checking the IDs at the time, and let the passenger fly as a selectee on the originating flight. This is disturbing because it suggests that TSA is enforcing corporate policies, rather than the law (secret or not). The Delta rep also threatens that the flyer will be put on a list:

At the sceurity screening in Charlottesville, Virginia, I realized that I'd left my driver's license at home. "No problem," said the kindly TSA ID-checker. "You can travel without a driver's license. You'll just be a selectee."

With that he wrote "SSS" on my boarding pass, and when I went through I was taken aside for the extra-special treatment: full wanding, luggage dump, jokes about having to confiscate my doughnut.

They couldn't have been nicer.

On the way back, however, in Dallas, the TSA ID-checker sent me to the Delta counter, where the Delta representative told me that I couldn't possibly fly without an ID. "I don't care what they told you in Charlottesville. Looks like you'll be taking the bus home."

Eventually, an even nastier Delta supervisor decided to let me travel. "But you'll be on a list from now on." He wouldn't tell me what kind of list, and I decided not to press my luck.

Curiously, the authority that made the decision as to whether or not I could fly apeared to rest with the Delta supervisor, and not the TSA screeners.

TSA takes on primary ID checks at airports

Here are more details about my observation that TSA is now doing the primary ID checks at airports:
September 26 was the first day that TSA took over the ID checking.
News reports suggested that the process can now take almost an hour since Transportation Security Administration agents took over the job of checking travel documents on Wednesday. Prior to the change, airlines checked passengers' identification. The TSA says it will do a more thorough job, causing longer delays at checkpoints. Passengers must still show their identification and tickets to security personnel, but the personnel are now government workers.
As I mentioned in an earlier post, this means that TSA is probably now enforcing the policies of the airlines (unless they are letting people fly without ID who haven't been approved by the airline). I worry that this may be unconstitutional.
Source 1. Source 2.

TSA now checking IDs at airports - government enforcing corporate policy

For all previous airline travel since ID checking began, IDs were checked by representatives of the airline or airport. It was these ID checkers responsibility to check for a valid government issued ID, unless the traveler had been approved by the airline for an additional security screening, in which case they either ensured that the boarding pass was appropriately marked for TSA or directed the traveler to TSA's attention. Since no ID is required by the TSA, it was these representatives who both enforced the airline's ID requirement (usually assumed to be a source of revenue control) and did the screening for ID for TSA.

Now that TSA has taken control of this process, it would appear that TSA is enforcing the airline's revenue control measures. Since TSA doesn't require an ID to fly, if a traveler cannot get the airline to let them fly without ID (e.g. Continental will not mark "SSSS"), will TSA enforce this corporate rule? At this point, it would then be easy for the TSA to suggest to each airline that they require ID, at which point they could deny the right to fly without ID despite their own rule. Is the TSA enforcing corporate policies? Corporate policies limiting free travel that are enforced by federal officers seems one step away from facism.