BTW, I rescind my contention that Marco Rubio is deemed to be a "natural born" citizen since neither of his parents were citizens at the time of his birth. He became naturalized along with his parents.
“He became naturalized along with his parents.”
That is incorrect. The U.S. Immigration and Naturalization Act of 1952 authorized a child born within the jurisdiction of the United States with alien parents to acquire naturalized at birth U.S. citizenship, provided the child complies with any additional conditions. Due to the citizenship being authorized by the statutory naturalization law, Marco Rubio is a naturalized citizen of the U.S.