John Bohanan opposed a same-sex marriage law in the Maryland legislature last year, and the measure lost. But in February, the Democratic lawmaker decided to change his vote, and with his help, the bill narrowly passed. "Once I began to look at this through the eyes of my own kids and other young people, it became pretty clear," the father of four sons, ages 17 to 21, told the Washington Post. "You want them to have love, and if that's how they want to express it, you want them to be able to do it openly." Wade Kach, a conservative...