Considering the fact that Nixon didn't seem to understand how treacherous Kissinger was, you may be right, but I do think he had a very good idea of how bad the situation was. Aside from the infamous tapes, which I'll get into below, I have it on good authority that - perhaps still going on today, or perhaps it's no longer necessary - new Presidents are shown an unreleased video, from a different angle, of the Kennedy assassination and that the reality of the Presidency is explained to them.
In light of the fact that Mossad/Irgun and American jews both in and out of the government were behind it (which I can expand on if anyone is interested) and so much more (9/11, etc.), I suspect Nixon was aware, and was made aware (by them), of most of the extent of their power. He literally acknowledged the fact that we live under a ZOG.
From WaPo:
"The Jews are all over the government," Nixon complained to his chief of staff, H.R. "Bob" Haldeman, in an Oval Office meeting recorded on one of a set of White House tapes released yesterday at the National Archives. Nixon said the Jews needed to be brought under control by putting someone "in charge who is not Jewish" in key agencies.
Washington "is full of Jews," the president asserted. "Most Jews are disloyal." He made exceptions for some of his top aides, such as national security adviser Henry Kissinger, his White House counsel, Leonard Garment, and one of his speechwriters, William Safire, and then added:
"But, Bob, generally speaking, you can't trust the bastards. They turn on you. Am I wrong or right?"
Haldeman agreed wholeheartedly. "Their whole orientation is against you. In this administration, anyway. And they are smart. They have the ability to do what they want to do--which is to hurt us."
...
Nixon demanded the ouster of the director of the bureau, Julius Shiskin, and asked his hatchet man, Charles Colson, to investigate the ethnic background of officials in the agency.
"They are all Jews?" Nixon exclaimed when Colson listed the names.
"Every one of them," Colson replied. "Well, with a couple of exceptions. . . . You just have to go down the goddamn list and you know they are out to kill us."
In a later conversation the same day--July 3--Nixon and Haldeman discussed Jewish penetration of the National Security Council staff.