HAVANA, CUBA - MARCH 20: Journalist Sandra Nyanchoka poses for a picture at Jose Marti International Airport for a 48-hour visit on Airforce One March 20, 2016 in Havana, Cuba. Obama is the first President in nearly 90 years to visit Cuba, the last one being Calvin Coolidge. (Photo by Sven Creutzmann/Mambo photo/Getty Images)
