Seattle Post-Intelligencer: Chala Ahmed, 26, hit the jackpot eight years ago when he won the U.S. visa lottery in the bustling eastern Ethiopian town of Haramaya. His first thought was that he would build his mother a big, beautiful house. His next thought was that the new home, painted a rosy pink behind a high white gate, should be erected on the shore of Lake Haramaya, the huge stretch of placid water that gave his hometown its name. It took Ahmed almost eight years of long-haul trucking across America …