Excerpt: http://www.foxnews.com/opinion/2012/09/20/white-house-staff-involved-in-colombia-secret-service-scandal.html

"Rumors are flying in Washington. Were White House staff involved with prostitutes in Colombia? In advance of the long awaited Department of Homeland Security (DHS)’s Inspector General (IG)’s report on the Columbia prostitution scandal, many in DC are wondering if the Inspector General’s report might answer this question.

Fox News' Jana Winter reported that a high-ranking Secret Service agent told Fox “we knew very early on that White House staff were involved.” Senator Grassley (R-Iowa) asked the same question in April. Apparently, the White House refused to answer Senator Grassley’s concerns."

This article points to definite leads. I did not see it anywhere else on the subverse by searching for 1) the article 2) secret service scandal 3) columbia secret service

Came across the author while going through this website that seems to have some credible information:

"Lori Handrahan is a professor at American University's School of International Service. She serves on UN's Inter-Agency Standing Committee (ISAC) working groups on humanitarian response and worked for UNHCR in the Balkans and Chad. She can be reached at [email protected]."

http://www.blacklistednews.com/State_Dept_Dan_Rosen%E2%80%99s_Arrest:_Cheat_Sheet_for_Journos/42246/0/38/38/Y/M.html