Several groups of American Secret Service employees visited clubs, bars and brothels in Colombia and engaged in "morally repugnant" behaviour before a visit by President Barack Obama, a US senator has alleged.

The Moroccan teenager at the centre of the underage prostitution scandal enveloping Silvio Berlusconi insists any damage she has suffered has been at the hands of the media, not the Italian premier.

US Federal prosecutors said they will not bring criminal charges against Eliot Spitzer for his role in a prostitution scandal, removing a legal cloud that has surrounded the former New York state governor since his epic downfall eight months ago.