Gerald Fords pardon of Nixon was not legal.
Fact is , there is very little Nixon did that could have been prosecuted so the whole point was moot
Both sides were happy with the pardon
Ford was able to movd on as president
The Democrats were delighted to have run Nixon outof the White House and were not eager to challenge Fords pardon only to have disclose to the world that all they ever had on Nixon was trumped up BS
If he had left the Special Prosecutor alone chances are he could have weathered the storm same as Clinton did, but he wouldn't trust the system and it cost him his Presidency.