You can now trade NXT / USD on the biggest Chinese exchange, BTER.
To deposit USD and buy NXT, you’ll have to use Egopay. https://www.egopay.com/exchange/
BTER won the race?
We’re still waiting for the first exchange to make direct USD/EUR to NXT deposits available.
Eyes are on Bithaus and DGEX + a few others.
Still, BTER is the first centralized exchange to make direst trading of NXT (Nxtcoin) vs USD available.