Nearly a quarter of Americans attend religious services of more than one faith or denomination. More than one-third are now married to a person of a different religion. As American society becomes more open and tolerant of diversity, a growing number of interfaith couples are raising children in both religions. They say this encourages open-mindedness and gives extended family equal weight. But others caution that these mixed-marriages can be strained by conflict over religious practices and are more prone to divorce. As the holiday season approaches, a look at the growing trend of interfaith marriage and what it means for family life.