Santiago, Chile ? 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.

Several Chilean and American agents got into a pushing and shoving match outside the cultural center where the dinner was held. Bush noticed the fracas after posing for pictures on a red carpet with the summit host, Chilean President Ricardo Lagos and his wife and first lady Laura Bush.

Bush walked over to the agents, reached through the dispute and pulled his agent from the scrum.

The president, looking irritated, walked away with the agent.