** FILE ** Then U.S. Ambassador to the U.N. Bill Richardson votes to extend the UN's oil-for-food program, under which the Iraqis can sell limited amounts of oil to buy food and medicine in this Dec. 4, 1997 file photo at the United Nations in New York. Richardson has more international experience than just about anyone else in the 2008 field. The 59-year-old was ambassador to the United Nations in the Clinton administration, served on the intelligence committee during his 14 years in the House and has done international work from his perch as a small-state governor. (AP Photo/Kathy Willens, File)