In this Tuesday, Sept. 29, 2015 file photo, U.S. President Barack Obama stands with Cuba's President Raul Castro before a bilateral meeting at the United Nations headquarters.
In this Tuesday, Sept. 29, 2015 file photo, U.S. President Barack Obama stands with Cuba's President Raul Castro before a bilateral meeting at the United Nations headquarters. Andrew Harnik AP
In this Tuesday, Sept. 29, 2015 file photo, U.S. President Barack Obama stands with Cuba's President Raul Castro before a bilateral meeting at the United Nations headquarters. Andrew Harnik AP