U.S. President Barack Obama, left, attends a State Dinner hosted by Cuban President Raul Castro, right, at the Palace of the Revolution, Monday, March 21, 2016, in Havana, Cuba. (AP Photo/Pablo Martinez Monsivais)
U.S. President Barack Obama, left, attends a State Dinner hosted by Cuban President Raul Castro, right, at the Palace of the Revolution, Monday, March 21, 2016, in Havana, Cuba. (AP Photo/Pablo Martinez Monsivais)