Independent investigation by special counsel, and Trump's political miscalculation has all but assured that it will happen.
I think that ship has sailed, most likely.
Agreed, and this poorly handled termination is only going to intensify the scrutiny, the exact opposite of what Trump wants.
Also, regardless of outcome, certain themes stick with presidents based on choices made or moment in time - unfairly so in some cases, but it's true. How does Trump ever recover from the growing theme that he is a self-serving, Nixonian crook?