February 26, 2014 EPA Officials Obstructed Fraud Investigation Blocked probe of senior official who cost taxpayers nearly $900,000 CJ Ciaramella Several Environmental Protection Agency employees obstructed an investigation into the mismanagement that allowed a senior EPA official to bilk taxpayers for nearly $900,000, the EPA Inspector General said in a letter to Sen. David Vitter (R., La.) released Wednesday.EPA employees threatened Inspector General investigators, refused to cooperate, and handed out non-disclosure agreements to other employees to keep them from being interviewed, EPA Inspector General Arthur Elkins Jr. wrote in response to a request for information by Vitter on the case.“Over...