The U.S.-Mexico border is marked with steel vehicle barriers near Columbus, N.M. The quiet border town was rocked recently when its mayor, police chief, a city councilman and others were arrested on gun smuggling charges. Chip Somodevilla/Getty Images hide caption

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Jorge Luis Angulo was just 11 years old when the Juconi Foundation found him on the streets of Guayaquil, Ecuador. Now, at 17, he hopes to attend a university, but his relationship with his mother remains deeply troubled. Larry Abramson/NPR hide caption

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Fifty-year-old Segunda Ayobi, with her extended family. Ayobi, who lives in a slum in Guayaquil, Ecuador, enrolled her son Mario in a shelter when he began to miss school, to keep him away from drugs and trouble. Larry Abramson/NPR hide caption

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Maribel Olmedo sits in her house, surrounded by some of her children, including Hamilton (from left), 16, Jonathan, 12, Pierina, 2, and Jose, 1. The family struggles to make ends meet, but Olmedo says she is grateful her children are alive. Larry Abramson/NPR hide caption

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Electoral workers count ballots by candlelight at a polling station at the end of a presidential runoff in Port-au-Prince, Haiti, on Sunday. The two choices were Mirlande Manigat, the former first lady, and Michel "Sweet Micky" Martelly, a Haitian music star. Results are expected at the end of March. Ramon Espinosa/AP hide caption

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A banner in Haiti's Cite Soleil neighborhood encourages residents to vote Sunday in the second round of elections. Allison Shelley/Getty Images hide caption

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President Obama, center, and Brazilian President Dilma Vana Rousseff, right, wave to greeters on the balcony during the arrival ceremony at the Palacio do Planalto in Brasilia, Brazil, on March 19. Pablo Martinez Monsivais/AP hide caption

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