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Captives separated by a fence conduct communal evening prayers at the Camp 6 prison building at the U.S. Naval Base at Guantanamo Bay, Cuba. Walter Michot/Miami Herald/TNS/Landov hide caption

itoggle caption Walter Michot/Miami Herald/TNS/Landov

A supporter waves a Cuban flag in front of the country's embassy after it reopened for the first time in 54 years on July 20 in Washington, D.C. The embassy was closed in 1961 when U.S. President Dwight Eisenhower severed diplomatic ties with the island nation after Fidel Castro took power in a communist revolution. Mark Wilson/Getty Images hide caption

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Cubans gather in Santiago de Cuba to celebrate this year's Revolution Day, the 62nd anniversary of Fidel Castro's first open assault on the forces of President Fulgencio Batista, who would eventually be overthrown by the rebels. Yamil Lage/AFP/Getty Images hide caption

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American tourists, like these visitors taking a guided tour in May, still have to provide one of 12 authorized reasons — such as visiting family or engaging in humanitarian work — for travel to Cuba. Desmond Boylan/AP hide caption

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Secretary of State John Kerry spoke with NPR's Steve Inskeep at the State Department. Kerry said if Congress or a future president reverses a nuclear control agreement with Iran, U.S. credibility will suffer. Kainaz Amaria/NPR hide caption

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Federal agents seized Elián González, held in a closet by Donato Dalrymple, in Miami in April 2000. Dalrymple rescued the boy from the ocean after his mother drowned when they tried to escape Cuba. Alan Diaz/AP hide caption

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Miami swimwear entrepreneur Mel Valenzuela (right) explains online strategies to Cuban business owners Victor Rodriguez (middle) and Caridad Limonta (left) in Wynwood this month. Miami boutique owner Monica Minagorri (rear) watches. Tim Padgett/WLRN hide caption

itoggle caption Tim Padgett/WLRN

Elian Gonzalez attends the closing ceremony of the legislative session at the National Assembly in Havana on Dec. 20, 2014. Gonzalez tells ABC News that he would like to visit the U.S. as a tourist. Ramon Espinosa/AP hide caption

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The Minnesota Orchestra under the direction of conductor Osmo Vanska (center) performs during a concert at the Cuban National Theater in Havana on Friday. Yamil Lage/AFP/Getty Images hide caption

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President Obama meets Cuban President Raul Castro at the Summit of the Americas in Panama City on April 11. The White House says it wants to remove Cuba from its list of state sponsors of terrorism. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP

President Obama with Cuban President Raul Castro during their historic meeting at the Summit of the Americas in Panama City. The Obama administration announced Tuesday it will remove Cuba from its list of state sponsors of terrorism. Pablo Martinez Monsivais/AP hide caption

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