Amidst all the furor of last night’s Presidential election, another historic vote took place in the US territory of Puerto Rico. By a 65% margin, Puerto Ricans voted to make their 114-year relationship with the United States official by becoming its fifty-first state. President Barack Obama has said he would support the referendum if there’s a clear majority, so the issue will go to Congress next. But if they agree, America will have to make room for another star on its national flag …