Children stand in a tent camp for people displaced by the 2010 earthquake ahead of the arrival of Tropical Storm Isaac in Port-au-Prince, Haiti, Friday Aug. 24, 2012. Tropical Storm Isaac strengthened slightly as it spun toward the Dominican Republic and vulnerable Haiti on Friday, threatening to bring punishing rains but unlikely to gain enough steam to strike as a hurricane. (AP Photo/Dieu Nalio Chery)

Associated Press
Children stand in a tent camp for people displaced by the 2010 earthquake ahead of the arrival of Tropical Storm Isaac in Port-au-Prince, Haiti, Friday Aug. 24, 2012. Tropical Storm Isaac strengthened slightly as it spun toward the Dominican Republic and vulnerable Haiti on Friday, threatening to bring punishing rains but unlikely to gain enough steam to strike as a hurricane. (AP Photo/Dieu Nalio Chery)
Children stand in a tent camp for people displaced by the 2010 earthquake ahead of the arrival of Tropical Storm Isaac in Port-au-Prince, Haiti, Friday Aug. 24, 2012. Tropical Storm Isaac strengthened slightly as it spun toward the Dominican Republic and vulnerable Haiti on Friday, threatening to bring punishing rains but unlikely to gain enough steam to strike as a hurricane. (AP Photo/Dieu Nalio Chery)
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