THIS IS THE SMOKING GUN I FOUND AT THE KENNEDY LIBRARY.

Bromley Keables Smith (BKS) was the Executive Secretary of the National
Security Council (NSC). At one meeting he used this Department of State
telegram to write a note at the bottom of the page indicating that Richard
Helms, Director of the Department of Plans at the Central Intelligence Agency
had assured the NSC that Barghoorn had no ties to the CIA or Army. Smith
then passed that information on to President Kennedy.