1950 Memorandum regarding the Japanese Peace Treaty and U.S. aims to enable Japan to revise the war renouncing Article 9 of the Constitution of Japan

This is an official diplomatic correspondence sent to the then secretary of state (John Dulles) and is found in the official government released publication Foreign Relations of the United States. It was classified as Top Secret. I introduced it as evidence in the lawsuit against the CIA, State Department et al., to no avail.

https://history.state.gov/historicaldocuments/frus1950v06/d785

It is one source revealing the fact that it was secret U.S. policy to facilitate revision of Article 9 of the Constitution of Japan only 3 years after it was promulgated in 1947. 
In order to describe U.S. machinations at the time in relation to the current actions of ultra-nationalist Japanese politicians in the Liberal Democratic Party (LDP), like Nishida Shoji, it will be useful to go back to the Meiji Restoration and describe the manner in which the Meiji Constitution (Constitution of the Empire of Japan) was implemented, and the features that characterize it, placing it in historical context.
The LDP, which, as described on this blog in the post about Kishi Nobusuke, was established in 1955 by a Class-A war criminal using funds provided by the CIA through an organized crime figure.

In the post I will write about the Meiji Constitution--sooner or later--I will expand on the significance of the fact that the people that the U.S. has established in power in present day Japan, including Kishi and his grandson, the assassinated Abe Shinzo, as well as Aso Taro and his grandfather, Yoshida, who was also a prime minister, etc., were from the same two areas, Choshu and Satsuma, that the West sold arms to in order to enable the adherents of Sonno joi "Revere the Emperor, expel the barbarians" (https://en.wikipedia.org/wiki/Sonn%C5%8D_j%C5%8Di) to overthrow the Tokugawa Shogunate. Those two areas subsequently formed the majority of the government known as the Meiji oligarchy (https://en.wikipedia.org/wiki/Meiji_oligarchy).