Thank you.
The President cannot "come to the aide" of the Marine. He's under investigation right now and anything that could be construed as "command influence" from the Commander In Chief is not allowed.
Fox is saying this am that yesterday, before the President arrived, there was a big argument with Chilean security about GW's secret service traveling with him. Evidently this is unusual, not done by other heads of state. Chile's machismo was offended. (What are you saying? That we can't protect your president!) So there was bad blood brewing here even before last night. GW settled the matter nicely. Chile got a black eye and deserved it.