AP is reporting that ...
...the Secret Service will assign chaperones on some trips to enforce new rules of conduct that make clear that excessive drinking, entertaining foreigners in their hotel rooms and cavorting in disreputable establishments are no longer tolerated.
The main problem with that whole Secret Service affair in Cartagena, at least to this disinterested observer, is that those Secret Service agents who were fired or forced to resign probably didn't violate any specific rule regarding their behavior. After all, was it a rule violation if they did something that was perfectly legal in the country where they were but which is illegal in 49 out of the 50 states?
Most likely their biggest offense was that they stole the President's spotlight. More:
The rules did not mention prostitutes or strip clubs. But they prohibit employees from allowing foreigners, except hotel staff or foreign law enforcement colleagues, into their hotel rooms. They also ban visits to "nonreputable" establishments, which were not defined. The State Department was expected to brief Secret Service employees on trips about areas and businesses considered off-limits to them.
(Emphasis added.) Hmm. Perhaps Secretary of State Hillary Clinton could persuade her husband to come lecture the agents on the potential for embarrassment certain visitors might cause them.