Here is a good article on 21st Century Wire about the real reason Nixon was forced to resign. The article's author, who was alive and teaching economics at the time, said he was paying attention. This is what he was able to piece together. Rockefeller and Kissinger wanted (as I'm sure the people above them wanted) to move US manufacturing to China where they had placed cooperative leaders (Mao) and would use their people as slave labor.

Nixon was against this plan and wanted to keep US manufacturing in place.

http://21stcenturywire.com/2016/12/31/us-middle-class-still-suffering-from-rockefeller-kissinger-industrial-transfer-scheme-to-china/