President Barack Obama sits in front of a large video screen displaying an image of a U.S. national flag at the CEO Summit of the Americas, in Cartagena, Colombia, Saturday April 14, 2012. (AP Photo/Carolyn Kaster)

Photo by: Carolyn Kaster

President Barack Obama sits in front of a large video screen displaying an image of a U.S. national flag at the CEO Summit of the Americas, in Cartagena, Colombia, Saturday April 14, 2012. (AP Photo/Carolyn Kaster)