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"I am old enough to have heard Secretary of State Dean Acheson deplore the State Department's failure to retain the intelligence function within its purview in the formative years of 1945 to 1947, when the abolition of the wartime stand-alone Office of Strategic Services (OSS) was followed by the formation of the very small and improvised Central Intelligence Group with some OSS people as a temporary expedient. At that point, the State Department could have easily absorbed that orphan entity, but the career Foreign Service Officers of those days disliked its ex-OSS “émigré” (read Jewish) intellectuals and assorted tough guys and, therefore, allowed the rise of the Central Intelligence Agency (CIA) as an entirely independent agency--which over the years has gained ever greater funding (regardless of its abysmal performance) and has become a powerful competitor in the policymaking process..." Edwin N. Luttwak, Coup D'État, p. 59. https://books.google.com/books?id=hya7CwAAQBAJ&pg=PA59
Maybe the State Department by itself couldn't quash the formation of an independent CIA but--if it had been more determined to retain control of "political" intelligence--maybe it could join forces with elements in the military who feared the new agency might threaten the power of their own intelligence organizations? (True, army intelligence, ONI, etc. continued to exist after the formation of the CIA but they--as well as the State Department--had a sexy new competitor with direct access to the White House...)