Judiciary has more power than you'd think too. It's just that they try to act in good faith and generally do not want to throw people into civil contempt that often. The SCOTUS can even re-re-interpret the presidential immunity that Trump has abused to a pulp if they are angry enough. That was their call after all.
Will they do this? Highly unlikely, at least for Trump. I wouldn't be surprised if Musk flies too close to the sun, however.
<Sad clown laughing noises>
Regarding the power of the judiciary in this, Trump's team is arguing right now before the Supreme Court that the judiciary has no power to constrain the President's power when he's acting solely within the Executive branch (which is basically all the time...) Oh, and as part of that filing he reminded the Supreme Court that they just granted him full immunity from prosecution.
For the cherry on the cake, the official Whitehouse X account tweeted out "GOD SAVE THE KING" with a picture of Trump with a crown on his head (I thought this was fake when I first saw it).
Sorry, the Republic is toast.
so the question is why?
The point about what they're legally allowed to do, and could do, is moot, if there's no will.