Before Marco Rubio received his first communion in the Catholic Church, he was a Mormon. The Florida senator, considered the top choice for GOP presidential candidate's running mate, was baptized into the Church of Jesus Christ of Latter-day Saints when he was 8 years old, a recent revelation that could potentially hinder the popular Senate freshman's political career. "Mitt Romney's Mormonism and Rubio's Catholic faith would already mean the first two members of minority traditions on a Republican ticket in American history," BuzzFeed points out. "Rubio's Mormon roots could further complicate that calculation."