A tense debate is taking place in states across America. At what age should someone be allowed to marry? Currently in 48 out of 50 states a child can marry, usually with parental consent or a judge's discretion. In 17 states there is no minimum age, meaning in theory, a two year old could marry. But there is a campaign to change the law and raise the minimum age of marriage to 18 without exceptions across all American states.