Justice Ruth Bader Ginsburg marrying Michael M. Kaiser and John Roberts at the Kennedy Center on August 31, 2013. (Photo by Margot Schulman)

On Saturday, Ruth Bader Ginsburg became the first Supreme Court justice to officiate a same sex marriage. She presided over the wedding of Kennedy Center President Michael M. Kaiser and economist John Roberts. Post reporter Robert Barnes interviewed Ginsburg on Saturday. 

Earlier: Ginsburg will be first justice to officiate at same-sex wedding, 8/31/13