Originally Posted by LessO2

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.