... U.S.)
Just let that sink in.
Carmen Duarte of the Arizona Daily Star informs us (link) that Marco Antonio Lopez - the 31-year-old former mayor of Nogales, Arizona - has been selected for the position by Janet Napolitano. She also appointed him to lead her Arizona-Mexico Commission and later as a senior advisor. In 1999 he worked in the White House doing travel preparations for VP Al Gore.