"I'm from the United States," said Dr. [Claire-Marie Cyprien], a 43-year-old anesthesiologist who three days earlier had dropped her practice in Orlando, Fla., to rush to Haiti, the land of her birth. "And I'm a doctor." For generations, Haiti's chaos, corruption and poverty pushed out many of its most talented people. Haiti has a population of about nine million, but as many as two million more Haitians live abroad, about half a million of them in the U.S. The diaspora-Haitians refer to the émigrés as Haiti's "Tenth Province"-sends about $2 billion a year home, a sum equal to about 30% of the country's gross domestic product. Despite the money, émigrés have often been regarded warily by those who stayed behind. Emigration may offer a way to climb up or break out of Haiti's rigid class structure. But new wealth inspires jealousy, while distance from the motherland opens émigrés to accusations that they aren't as "authentic" as those who never left.