It matters not what you think what his loyalties might be, the fact is that Rubio is a NBC,
“Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passion, they cannot alter the state of facts and evidence.”
John Adams
I agree with Adams, which is why I don’t agree with you.
Loren ?
I think Rubio is a loyal American, and I think he Might be a "natural born citizen." It is my understanding that his mother had already become a citizen prior to his birth, and that his father had already gone before a Judge and indicated his intention to become an American prior to his son's birth.
Given the way the matter was handled during the founding era, I think this might be sufficient to overlook the fact that his father had not completed the process prior to his son's birth, but it is not something of which I am certain.
I personally am willing to give him the benefit of the doubt. He is certainly more of a citizen than this current moron in the White House.