If Rubio is named as VP-candidate, then it is clear that both parties have made Article II, Section 1, Para 5 another "dead letter."
If Roberts and the court wanted to make their make in history, they would slap down those trying to make The Constitution moot, starting with the current usurper! But alas, Roberts is just another pantywaist.
BTW, did George Romney become an American citizen before Mitt Romney was born, or after Mitt Romney was born? This question determines whether or not Mitt Romney is a legal U.S. citizen.
Our Constitution only mentions or envisions THREE types of citizens - those who were citizens at the time of adoption (most born as natural born subjects of England, and now all deceased) those who were natural born as citizens of these United States, and those who had to be naturalized.
Marco Rubio was not naturalized and had no need of naturalization because he was born a citizen of these United States.
Currently there are only two types of citizenship in the United States - natural born or naturalized. U.S. law envisions two and only two ways of becoming a U.S. citizen; one is either born with natural allegiance and thus is a citizen at birth, or one must be naturalized as a citizen.