 Barely a quarter of Americans 20 years ago supported same-sex marriage rights. Now it's north of 70%. And many people don't even think twice. These families are now interwoven into the tableau of American society. And in fact, there's some new research now that is backing up the findings and benefits of that social shift 20 years ago. The Rand Corporation, which is a nonprofit, nonpartisan, very well-regarded research organization,