In a passionate pitch simulcast to millions of Christian conservatives across the nation, Gov. Mitt Romney blasted gay marriage in Massachusettsas a danger to kids and urged the passage of a national ban on same-sex marriage. “The price of same-sex marriage is paid by the children,” said Romney during a brief but peppy speech from Boston during a forum hosted by the Family Research Council. “The child’s development is enhanced by the nurturing of parents of both genders. Every child deserves a mother and a father.”