You must understand, we have two primary issues here that seeded this ground for us:
One: After Nixon, Gerald Ford pardoned him. That set a precedent that Presidents were basically above the law, that going after former Presidents was "too political" and would lead to a slippery slope of Presidents attacking their former opponents. It was a fig leaf.
Two: Soon after, the Justice Dept of the USA wrote an infamous memo that basically said, "We're not going to prosecute any charges against a sitting American president, because that could lead to a situation where they are constantly defending against frivolous lawsuits instead of doing the important President job." Again, slippery slope. Nothing that had actually happened.
So also, billionaires generally never get any kind of prison time literally ever, because they can afford to tell their lawyers to burn up millions in the pursuit of delaying justice to the point where people literally give up or you know, Trump literally dies before the charges ever stick.
It's an imperfect system. When it seems to be working, we're honestly baffled.
Especially when it seems like the government is literally making the case it's actually making right now.
We never had to test this theory before at all, because Presidents were usually good enough to, say, give up their former war criminal past and paint shitty portraits and sit next to Elllen....but I digress.