It's funny how people are quick to jump and blame the TSA for their Moronic rules. When, in fact, the original link for this post takes us to a D-O-T webpage.

The TSA has recognized the implications of this rule and the inundation that it would create at screening locations. Besides, the rule is a bit foggy to say the least.

Apparently the DOT thought they would release a rule with little public education or training for the agency (TSA) that it would most affect. This was not a well thought out move on their part and I think that it is only right of the TSA to not enforce (if at all) until the public has proper notice and is prepared to adhere to with little impact to air travel.