I’m not from the US so all of this is baffling. In Europe and even South America there’s tons of mechanisms to stop that from happening, and this kind of meddling would seriously result in arrests. However this is happening in the US with these people going completely unchecked. How is that even possible?!
There are all sorts of mechanisms in the USA to stop this from happening as well. However, Trump spent the first term embedding loyalists in the courts and congress, so there really is not much left to stop him. If the people who are there to act as a check on presidential power are in on the game, then who is left to enforce the law?
Prosecution takes a very long time and authoritarians move very quickly. Time is not on our side.