I'd hate to think that we are going to profile babies. I would say that I hope terrorists never sink this low, but I know that they would do it if it meant furthering their agendas.
It is sad to think that babies could (or would) be martyred against their will by some sick SOB who loads their diaper with explosives and then detonates it onboard.
The only possible way I see TSA or any airport security being able to fight this is if TSA required parents to change their babies into sterile TSA supplied diapers there at the screening area and supplying them with some for the flight. It is amazing that we are sinking this low as a society.