Marta Elsie Leveron, 19, (left) and her brother Freddy David Leveron, 18, have not seen their father since he left El Savador to work in California in 1999. A new U.S. program allows families to reunite if one parent is a legal U.S. resident. The girl in the middle is Liliana Beatriz Leveron, 16, a cousin of the other two. Her parents are in the U.S. and she's seeking to reunite with them as well. Carrie Kahn/NPR hide caption

itoggle caption Carrie Kahn/NPR

President Barack Obama walks with Brazilian President Dilma Rousseff, second from right, during a visit to the Martin Luther King Jr. Memorial in Washington, D.C., on Monday. Evan Vucci/AP hide caption

itoggle caption Evan Vucci/AP

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

itoggle caption Alan Diaz/AP

Colombian cyclist Nairo Quintana poses for a snapshot during a training session this month in Colombia. LUIS ACOSTA/AFP/Getty Images hide caption

itoggle caption LUIS ACOSTA/AFP/Getty Images

Soda delivery in Bosque de Chapultepec, Mexico City. Between 1989 and 2006, the consumption of sugary drinks increased by 60 percent per capita in Mexico. Omar Bárcena/Flickr hide caption

itoggle caption Omar Bárcena/Flickr

The Brazilian national flag flutters at the front of the headquarters of the Brazilian state oil giant Petrobras, in Rio de Janeiro. Vanderlei Almeida/AFP/Getty Images hide caption

itoggle caption Vanderlei Almeida/AFP/Getty Images

Fernando Urias (left) and Victor Manuel Aguirre kiss after they learned they were allowed to marry, during a protest outside the municipal palace in the northern border city of Mexicali, Mexico, on Jan. 17. Alex Cossio/AP hide caption

itoggle caption Alex Cossio/AP