Is this only slightly corrupt, or very corrupt? It is not obvious to me:
The financial assistance wealthy friends provided, in an era when ties between politicians and businessmen were not scrutinized, was indicative of Humphrey’s longer-term dependence on such people. His three sons…attended Shattuck Military Academy…courtesy of scholarships provided to the school by Minneapolis-born William Benton, who had made a fortune in advertising before becoming Humphrey’s Senate colleague from Connecticut during 1950-52…Eventually, Ewald [a wealthy Minnesotan dairyman] also helped.
Later, when Humphrey became vice president, he would turn over his modest stock holdings to Dwayne Andreas, the multimillionaire agribusinessman who transformed the Archer-Daniels-Midland Company into a multinational powerhouse, to be put into a blind trust. Andreas commingled Humphrey’s funds with his own in his mutual income fund that invested heavily in ADM stock. Andreas never mentioned this arrangement to Humphrey, who never inquired. By the time of his death in 1978, Humphrey’s share of the mutual income fund was about half a million dollars…
That is all from Arnold A. Offner’s Hubert Humphrey: The Conscience of a Country.