An Evolving Situation

President Obama endorses gay marriage. We’ll take your calls. Plus: a new weekly series on advice for people in their 20’s with psychologist Meg Jay, author of The Defining Decade: Why Your Twenties Matter--And How to Make the Most of Them Now; the Guantanamo trial of KSM, commissioner of the NYC Office of Media and Entertainment, Katherine Oliver, on the state of the city’s film industry; and whether being 1/32nd Cherokee should count.