The investigation into the Colombian prostitution scandal that rocked the Secret Service two years ago was tampered with for political reasons, according to a new report. The lead investigator into the embarrassing drunken sex scandal told Senate staffers that his superiors asked him to withhold evidence and stall the report until after the presidential election. --SNIP-- Dach and his father, a deep-pocketed Democratic donor, are currently Obama administration employees. Jonathan Dach is a policy adviser at the State Department. Leslie Dach is a senior counselor with the Department of Health and Human Services, where he’s working on Obamacare implementation.