I tried to sign up for several payment companies so I could fund my BTC-e account, and each one said that US Citizens accounts will be deleted.
Why are international companies doing this?
Is the US Government trying to disrupt the movement of money?
Generally the US has higher standards and hassles companies that dont meet their requirements.
Its more of a risk to take on American accounts in this case, but America is also a very rich nation so these orgs must weight the tradeoffs.