It’s not the Secret Service’s job to conduct law enforcement operations in foreign countries. If intelligence was gathered that there was a possible threat to the POTUS (or anyone else under SS protection), they would inform their own agents of the threat and alert the government of the country in which they were visiting.
The Secret Service wouldn’t go on a thunder run to kick in doors in someone else’s country—that’s not their job.
Yes, but they are tasked with advance work and that is (including) counterintelligence, countersurveillance, discussion of the local protection environment, grasp of known cells and threats, and cooperation with the local agencies either US Embassy or local government. I can also imagine the SS at a G-20 summit. 90% of the protective guys off duty from various countries, minus Arab states maybe, will be going out for a beer to bond in a friendly country, discuss cooperation, etc. but the US guys just might have to whine down to the front desk/lobby "sorry, we might not be able to attend tonight, as we can't just seem to find our
CHAPERONE." (LOL).
Also, anyone wanna guess this "chaperone" is going to look like Janet Reno, Janet Napolitano or Sandra Fluke?