yes, he is actually:
Rubio was born in Miami, Florida,[6] the second son and third child of Mario Rubio and Oria Garcia
http://en.wikipedia.org/wiki/Marco_Rubio
Tina, not sure what you mean by “he is, actually”.
He was born in America to Cuban parents, who were actually citizens of Cuba.
Even if you argue he was a citizen of America under the 14th Amendment, that does not negate the requirements of Article II, Section 8.
as a citizen, he is eligible to be a Senator.
But he does not meet the requirements to be President or Vice President.