Former McCain campaign manager Steve Schmidt tells Sam Stein of the Huffington Post why gay marriage is now a conservative cause: "There is a strong conservative case to be made in favor of gay marriage," former McCain campaign manager and fellow same-sex marriage fundraiser Steve Schmidt told the Huffington Post on Tuesday. "Marriage is an institution that strengthens and stabilizes society. It is an institution that has the capacity to bring profound joy and happiness to people and it is a matter of equality and keeping faith of one of the charters of the nation, the right to live your...