I am a US citizen in the same situation with Wex. These guys have been completely unresponsive knowing I'm in the US. The BTC-E guys had a tough break with the FBI raid but these new guys in Singapore have flat out stolen my money. Account locked, no method to verify and no response to tickets.
If you deposited on BTC-E - FBI took your money.
If you deposited on WEX - you should have read TOS - it explicitly and clearly states that accounts from US citizens will be locked and seized without warning.
It's not like I'm endorsing that behavior, yet I see it's basis. I have strange habit of reading TOS on every service I intend to use.