I'm an admirer of Donovan, but think in some ways he laid the groundwork for what we have today. In many ways, Donovan was a man of the 19th century. When he was given the mandate to form the OSS, he sought, "the best and the brightest," and looked to the Ivies, assuming the recruits would be patriotic idealists. It was as though he was naively oblivious to the marxist threads that had crept into the schools in the '20s and '30s and assumed little had changed from his years at Columbia.
By the time the OSS was wound down and the CIA was stood up, the intel community was infested by elitists who were already too comfortable operating outside the law.