I was thinking, the TSA prohibits liquids in quantities of more than 100ml from going through security. But what about liquids frozen solid?
Turns out that someone already thought of this and wrote about it
here It makes perfect sense. Ice is a solid.
It is such a pain when they throw away your drinks at security. Simple solution apparently is to freeze them and keep them well insulated until after security. I will be trying this on our next US flight which is in a couple of weeks.