Imagine that Obama called the FBI director at the height of the Benghazi thing and told him that Hillary was a good person and he should consider "letting Hillary go". I bet everyone would be like: yah, the real story here is the leaks ;-).
So we got: FBI is investigating Trump. First Trump tries to tell the FBI director to let it go, then he fires him, then he says he fired him because he would not let it go.