> Perhaps the airlines have requested it as a way of circumventing ticket sharing, exchanges, etc.? Have they enlisted the government as the enforcer of their p

> Perhaps the airlines have requested it as a way of circumventing ticket sharing, exchanges, etc.? Have they enlisted the government as the enforcer of their price discrimination model? I think you nailed it. Obviously not all of the TSA's actions can be explained this way, but the insistence on ID that matches the boarding pass is so beneficial to the airlines that it's hard to ignore the possibility of 'regulatory capture'.