Here's an update:
Battle over Bush's security cancels Chilean state dinner
quotes from article:
Sources close to the Secret Service said the Chilean security teams took it as an insult that they were not trusted to protect Mr. Bush. But the Secret Service is the only agency in the world that is given the carte blanche to serve as bodyguards to the U.S. president, and the agents were not about to change that policy.
The conflict between the Secret Service and the Chilean security detail began before Mr. Bush arrived and escalated throughout the two-day Asia-Pacific Economic Cooperation (APEC) summit in Santiago that ended yesterday.