Binance , the Malta based exchange, announced on Friday that it is barring the US customers from its services :
The sudden shutting down reportedly prompted the US customers to withdraw a large number of altcoins, which included Binance’s very own native token BNB coin.
BNB token dropped 5$ in price following the news , from 36$ to 31$
It's completely within the expectations of all users, in my opinion.
This was something that was bound to happen, sooner or later. They simply could not continue to offer non-verified accounts to U.S. users without the SEC focusing on them, and they don't seem to be interested in getting regulated.
I don't think that this is necessarily something that will hurt their long term business, though, because people can still use VPNs to bypass these restrictions. But consider this to be the trend to be the future - traders not willing to verify themselves in the U.S. may need to continue to rely on new exchanges that pop up, as older exchanges face greater tightening of regulations.