I have long opposed the redefinition and nullification of marriage, the central building block for society. Indeed, as a U.S. senator I co-sponsored the Defense of Marriage Act and the Federal Marriage Amendment. As a citizen, I actively campaigned against the judges in Iowa who ordered gay marriage there. I also was one of the first to step out and encourage the leadership of the House of Representatives to defend the Defense of Marriage Act in court when the president refused to do so. Unlike others in this race, I believe it is the role of the president to weigh in when states try to redefine the meaning of marriage. Marriage is defined in the federal law as a legal union between one man and one woman as husband and wife; any state that redefines marriage is wreaking havoc not only with the definitions of the federal law and the majority of states, but, even more importantly, with the single most important and time-tested institution of every successful society.