This is WEEKEND EDITION from NPR News. I'm Rachel Martin.
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MARTIN: If life is a ball game, then Mike Pesca is the guy behind home plate helping us sort out the check swings from the foul balls. He is, of course, NPR's sports correspondent and our guide to the fascinating intersections between life and sports. He joins us, as he does every week. Hey, Mike.
MIKE PESCA, BYLINE: Hey. Every once in a while you could foul a ball off a check swing.
Host Rachel Martin talks with NPR's national political correspondent Mara Liasson about Mitt Romney's commencement address and the dominant political story of the past week: President Obama's public endorsement of same-sex marriage.
It's graduation season at colleges and universities around the country. And just as Mitt Romney addressed the students at Liberty University, other prominent politicians, entertainers and leaders are joining in that celebrated tradition. Here now, we present a composite commencement address for the class of 2012, drawn from some famous voices over the years.
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PRESIDENT JOHN F. KENNEDY: Board of trustees, distinguished guests...