"One Teletype message in the FBI's IPR file cites a source (redacted) to the effect that there was, since 1936, "a concerted effort to install men who had been screened by [Frederick Vanderbilt] Field or Carter or other members of the IPR into the State Dept.”

Another memo in the file, by an IPR regional officer, alleges that Carter "may have been connected with the Communists in some way... his political views are way to the left...I have little confidence in his basic honesty."