Editor's Note: This story has been edited throughout. An earlier version was inadvertently published.
Hossein Mahrammi, who helped U.S. development authorities in Kabul rebuild his war-torn country, expected a warm welcome when he arrived in the United States this month.
The economist had planned to stay in Afghanistan but left because he feared for himself and his family. One by one, he saw that his colleagues were assaulted or killed because they worked with Americans.