A long read but worth it.
How Obama evolved on marriage equality and how circumstances compelled him to step forward.
The final stages were engineered by numerous people, with the concluding element being the decision to take a position on Proposition 8, even though the United States was not a party to the action pending in the Supreme Court.In explaining how his thinking had “evolved,” he hit on many of the poll-tested talking points that [Ken Mehlman] [former chairman of RNC; thereafter came out] outlined in the memo he sent months earlier to Plouffe [a senior adviser to Obama]. He brought up Malia and Sasha, and talked about how “it doesn’t make sense to them” that the law treats gay parents of their friends differently from their own. He spoke of the need to respect religious liberty, but said that for him, as a practicing Christian, his faith was rooted “not only [in] Christ sacrificing himself on our behalf, but it’s also the golden rule.” He spoke about the “soldiers or airmen or Marines or sailors who are out there fighting on my behalf and yet feel constrained, even now that ‘don’t ask, don’t tell’ is gone, because they’re not able to commit themselves in a marriage.” And he said that while he respected the views of those who disagreed with him, “I think it’s important to say that in this country, we’ve always been about fairness and treating everybody as equals. I actually think that, you know, it’s consistent with our best and in some cases our most conservative values, sort of the foundation of what made this country great.”