Bush Pulls Top Security Agent From Fracas SANTIAGO, Chile (AP) - President Bush stepped into the middle of a confrontation and pulled his lead Secret Service agent away from Chilean security officials who barred his bodyguards from entering an elegant dinner for 21 world leaders Saturday night. Continues... One of US President George W. Bush 's Secret Service bodyguards (L) is prevented by Chilean security from entering the Mapocho cultural center where the APEC leaders attended an official dinner in Santiago(AFP/Martin Bernetti) AFP - Nov 20 11:47 PM Unidentified US and Chilean security agents argue after a US secret service agent was...