Former Nevada Congressman James Bilbray (L, standing) gives an introduction for U.S. Senator Hillary Clinton (D-NY) (R) during a roundtable discussion on the proposed Yucca Mountain nuclear waste depository at the University of Nevada Las Vegas in Las Vegas, Nevada January 16, 2008. Monica Brett, a Community College of Southern Nevada adjunct political science professor, listens at center. Yucca Mountain is about 90 miles northwest of Las Vegas. REUTERS/Las Vegas Sun/Steve Marcus (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA)