That one depends on how long Coinbase manages to stay around. They are registered as a money services business with FinCEN, but they do not seem to have registered with the states.

It's possible that they did FinCEN registration first (as that is the easiest and I believe is free, whereas the states require that you have a bond), and state registration is in the works, but I've not seen any evidence of that. I'd expect that if they were actually in the midst of getting that done, they would be trumpeting that fact widely, as it would be a great way to make themselves stand out from all the illegal-with-no-intent-to-become-legal Bitcoin money transmitters.