

A boy stands by a poster showing President Barack Obama and former President John F. Kennedy, a day before Obama's visit to Puerto Rico, on the grounds of El Morro National Park in San Juan, Puerto Rico, on June 13. Obama's June 14 trip marks the first visit to the US Territory by a sitting US President since Kennedy's 1961 visit. Ramon Espinosa/AP
Activists hang banners that read in Spanish 'Freedom, political and war prisoners' (r.), and the names of federally-imprisoned Puerto Rican nationalists belonging to the militant group Los Macheteros, a day before the arrival of President Barack Obama to Puerto Rico at El Morro National Park in San Juan, Puerto Rico, on June 13. Ricardo Arduengo/AP
President Barack Obama boards Air Force One at Miami International Airport, on June 14, in Miami, en route to Puerto Rico. Carolyn Kaster/AP
A man walks holding a US flag in front of the Capitol before the arrival of President Barack Obama in San Juan, Puerto Rico, on June 14. Ramon Espinosa/AP
A woman walks holding a US flag next to police officers before the arrival of President Barack Obama in San Juan, Puerto Rico, on June 14. Ramon Espinosa/AP
A man holds a US flag before the arrival of President Barack Obama in San Juan, Puerto Rico, on June 14. Ramon Espinosa/AP
People from different organizations supporting the independence of Puerto Rico protest the visit of US President Barack Obama through the streets of Old San Juan, in San Juan, Puerto Rico, on June 14. Ana Martinez/Reuters
A woman from the Independence Party sings the national anthem during a protest against the visit of President Barack Obama through the streets of Old San Juan, in San Juan, Puerto Rico, on June 14. Ana Martinez/Reuters
President Barack Obama waves to a crowd gathered inside a hangar at the Muniz Air National Guard Base, shortly after his arrival in San Juan, Puerto Rico, on June 14. Brennan Linsley/AP
President Barack Obama shakes hands after speaking to a crowd gathered inside a hangar at the Muniz Air National Guard Base, shortly after his arrival in San Juan, Puerto Rico, on June 14. Brennan Linsley/AP
A protester from the Independence Party burns a US flag during a protest against the visit of President Barack Obama, in San Juan, Puerto Rico, on June 14. Ana Martinez/Reuters