Falsani is the author of the critically acclaimed book, The God Factor: Inside the Spiritual Lives of Public People, a collection of 32 spiritual profiles of famous "culture shapers" including Bono of U2, Nobel Peace Prize winner Elie Wiesel, author Anne Rice, and professional basketball player Hakeem Olajuwon.
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At the time of the interview, Obama was a state senator from Illinois and the nominee of the Democratic Party of Illinois for the U.S. Senate in the 2004 election.