Ayaan Hirsi Ali is the author of "Nomad: From Islam to America, A Personal Journey through the Clash of Civilizations." A native of Somalia, she later moved to Holland to escape an arranged marriage, and eventually became a member of the Dutch parliament. In 2005, she was named one of Time Magazine's People of the Year. This outspoken critic of Islam moved to the United States to join the American Enterprise Institute and wrote her autobiography, "Infidel." In this interview, a woman who has been threatened with death shares the biggest obstacle she has overcome.