Yes it is huge and rough.  I never used polo as my primary exchange, but I always thought they were decent.  I am very shocked at this, and I'm wondering what's prompting this move.  I was not aware of the buyout by Circle, though I'm not sure if that's the reason.  Circle stopped dealing in bitcoin, but why that would affect polo's U.S. customer base is a mystery to me.

Is there some U.S. gov't regulation happening here?  Even when Binance created the site for the states, there were some states which were excluded.  I do hope this isn't the ominous sign that it seems to me to be.