Stop freaking out. You're all good! If you have funds on BTC-e (or will have funds on the new site), just be very careful about not sending those coins directly back to a licensed exchange like Coinbase. Those coins could be subject to civil asset forfeiture. Get some clean coins through another exchange/service first.
I think you would find there would quickly be a class actions against the seizure if people started reporting they were getting raided.
Most BTC-e customers are not from the US.