George Will had a column a few days ago arguing that what Nixon was really afraid of was that it would come out that he had contacts with the South Vietnamese government just before the 1968 election discouraging them from doing anything that would help Humphrey's chances of winning the election. That could be considered a violation of the Logan Act. That fear of discovery is what led to the creation of the so-called Plumbers.
When I was in jr. high and high school in the early 80s, we didn’t cover much past the Kennedy assassination and the 64 civil rights legislation.
End of the semester, figure it out yourself...