He did the heroic thing. Instead of waiting for SCOTUS to toss out all the anti-gay state laws and tell people to stop being homophobes, he told half the country, (the tolerant true American-half) "I am with you. Follow me and we'll win day."
Let the shaming begin.
Homophobes and bigots have been put on notice: Let go of your fear or prejudices about gays, or be shamed for your beliefs. You're just like WBC--ugly, intolerant, bigots.
The most powerful man in the world just said it's okay for gays to marry. If you don't understand the weight that carries -- then IMO, you're not American.