During his historic trip to Cuba this week, President Barack Obama delivered a speech on the state of Cuban-American relations. In it, he spoke of Melinda Lopez, who visited the nation in 2011 in search of her family's roots. Lopez is playwright-in-residence at Boston's Huntington Theatre Company. She spoke with WGBH All Things Considered host Barbara Howard about her shock at being referenced in Obama's speech, and the story of her 2011 visit that inspired the president's mention.