When travelling in Puerto Rico recently I tried to access Hulu, and got the message that it is available only "within the United States."
But this artificial distinction between the USA and Puerto Rico is pretty harmful to the island because while Puerto Rico is bound by the trade regulations of the USA it doesn't get to enjoy many of its businesses and services. And this puts us at a significant and needless disadvantage.
http://www.reuters.com/article/2011/10/05/us-puertorico-stat...
Yes, that is the standard DC license plate.