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(history.state.gov)
Office of the Historian
Foreign Relations of the United States, 1964-1968,
Volume XXIX, Part 2, Japan
ttps://history.state.gov/historicaldocuments/frus1964-68v29p2/d1

1. Editorial Note
In the 1958-1968 decade,
the U.S. Government approved four covert programs to try to influence the direction of Japanese political life.
Concerned that potential electoral success by leftist political forces would strengthen Japanese neutralism and
eventually pave the way for a leftist government in Japan,
the Eisenhower administration authorized
the Central Intelligence Agency before the May 1958 elections for the Japanese House of Representatives
to provide a few key pro-American and conservative politicians with covert limited financial support and electoral advice.
The recipient Japanese candidates were told only that they were getting support from American businessmen.
This program of modest financial support to key politicians continued during subsequent electoral campaigns into the 1960s.