For Obama. rainbow White House was 'a moment worth savoring.'
The South Carolina senator and presidential hopeful warns his party.
"Sometimes there are days like this when that slow and steady effort is rewarded with justice that arrives like a thunderbolt," Obama said.
An ad urging same-sex couples to enroll under Obamacare debuts in Illinois this weekend.
National Gay and Lesbian Task Force will shift focus more to legal and societal issues that have arisen in wake of recent same-sex marriage rulings.
The Maine Republican was also endorsed by the Human Rights Campaign.
The decisions mark at least temporary victories for gay rights advocates.
Margaret H. Marshall speaks about the landmark decision and the sea change that it put in motion.
The senator from Utah opposes gay marriage, but sees it becoming legal everywhere.
A key hearing on gay marriage is taking place today. Click here for live updates.