Originally Posted by
chollie
Both TSA and the airlines would be quite happy to find an excuse to prohibit carry-ons - TSA so their screeners have less work to do and the airlines because it will drive more checked bag revenue their way.
I'm sure the front-liners with both the TSA and airlines (gate agents, FAs) would love to prohibit carry-ons. But I don't think that will happen.
The problem is that more checked bags would slow down the screening. It would also result in a need for increased manpower for the TSA, and the airlines (in baggage handlers). Plus, it would likely mean more people waiting in line to check a bag, increased time necessary to check-in and increased time to wait for a bag or bags to claim. Not to mention the additional costs to the airlines for delayed/lost bags. And less cargo space (a big source of revenue for airlines).
Even LHR backed off of the one-bag thing.
I don't think they will completely prohibit carry-ons.