Predictions

Trump will fire Mueller.
The Republicans in Congress, led by Mitch McConnell and Paul Ryan, will do nothing to stop him. McConnell is already blocking a vote on a bill that would protect Mueller.
With seven months left until the midterm elections, the GOP will do everything in its power between now and then to suppress the vote in Democratic-leaning areas.
The Supreme Court as currently constituted is unlikely to stop them.
The Trump administration may even take some kind of legal action to interfere with the electoral process in "blue" states.

In short, those currently in power are more interested in perpetuating their own power than in the rule of law, and the people who are supposed to serve as checks and balances to each other are not interested in acting as such. As I've said before, constitutions only matter when people pay attention to them.

Seven months. Use them wisely.