The way I see it Mt-Gox told a little white lie when opening a bank account in the US. They then made the bigger mistake of forgetting about it.
They should have refiled all those documents as soon as they had the money and time to do so.
Legality of the laws in place to regulate and monitor the banking system in the US aside, this is not an attack on Bitcoin by the US government. This is just government bureaucracy.
If MtGox cuts there losses and opens new bank accounts with the right information how long would it take to reopen Dwolla transfers? And why haven't they done so already?
MtGox is never brining Dwolla back.
This isn't just a little white lie. MtGox would have to register as a money transmitter in all 50 states. Plus it costs $25 million dollars and they have to have insurance for all the moeny they transmit.
It's never going to happen. Don't wait around for it.