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.
I know it sucks but I would be blaming the US gov on that one, I think its fair that wex not trade with US citizens,
I understand the sentiment. Most likely that's why they are freezing us out. I believe this is wrong. Leaving alone the points you mentioned that are not related to crypto, the US has NOT been hostile to bitcoin, (I was actually surprised about that). Overall, they have basically left the industry alone. Yes there are some isolated incidents, also the ICO situation, But by far they've been surprisingly cautious about messing with the industry. If you want to see hostile, Look at China, practically one day to the next, and NO MORE EXCHANGES! That's highly unlikely to ever happen in the US.
Regarding specifically the raid on BTC-E, there definitely was a lot of smoke there. I don't know about the fire. But can we agree that if they did some of the things they are accused of, then they had it coming? which country would've allowed them to knowingly operate a money laundering machine? I must admit that I loved that they reconstituted themselves, effectively giving the FBI the finger. It was great seeing the strength of the whole bitcoin idea proven. However, stealing funds from US citizens as payback is certainly wrong and frankly can get them into further hot water.