Trade by TradeBelize
US investors permitted
Trade by Trade has Belize as its country of registered address, and offers a decent selection of trading pairs. The tropical wonderland of Belize actually features more than one cryptocurrency exchange. Tough competitors include Bitlio and AlfaCashier.
Not suitable for beginners, however, as it does not have any fiat currency deposits.
We will of course write a more detailed review of Trade by Trade than the above.