Rubio is eligible to be president. He was born in the United States. He is a natural-born citizen. Read the Fourteenth Amendment, and forget this fiction that one must have been born in the United States AND have two American parents to be a natural-born citizen. The law is that one must have ONE American parent OR be born in the United States. Maybe you don't like that, because it means that Obama, even if the Hawaii birth certificate is bogus, is a natural born citizen because he had one American parent, his mother. The definition of a natural born citizen is one who is a citizen by reason of birth and not by naturalization.