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LAKE FOREST, CA - NOVEMBER 29: Democratic presidential candidate, Sen. Hillary Rodham Clinton of New York and Pastor Rick Warren shake hands at the third annual Global Summit on AIDS and the Church, a four-day event at Saddleback Valley Community Church where Warren serves November 29, 2007 in Lake Forest, California. Warren founded the church's HIV/AIDS Initiative with his wife Kay, and is the author of the popular Christian book, 'The Purpose-Driven Life.' (Photo by David McNew/Getty Images)

LAKE FOREST, CA - NOVEMBER 29:  Democratic presidential candidate, Sen. Hillary Rodham Clinton of New York and Pastor Rick Warren shake hands at the third annual Global Summit on AIDS and the Church, a four-day event at Saddleback Valley Community Church where Warren serves November 29, 2007 in Lake Forest, California. Warren founded the church's HIV/AIDS Initiative with his wife Kay, and is the author of the popular Christian book, 'The Purpose-Driven Life.'  (Photo by David McNew/Getty Images)