His protestations notwithstanding, Richard Nixon really was a crook. He did, however, have at least some sense that the national interest was larger than his own. He resigned rather than put the country through a painful and divisive impeachment trial.
Would Donald Trump do the same? Of course not. Trump can’t conceive of any interest that could possibly exceed his own. America, to him, is nothing more than the stage on which he exercises his genius. We’re all just extras in a drama in which he is the one and only star.