Part 1 of 2 parts .. due to length
. If the person is convicted of child sex trafficking, or crimes against humanity, they will be executed. It they are convicted of treason they will be executed. Before the trial, if the person has evidence on someone else to help the prosecution or is willing to help Trump. and they want to cooperate and do things for trump to drop a possible sentence of execution down to life in prison then they are allowed to do that if the evidence is worth anything.
When a plea deal is done the defendant has to present anything they have to make the possible sentence lighter. That information is given to the prosecution, defense, and to the judge. If it is accepted they are presented the plea deal, and then they have to make a written statement and plead guilty to the crime with a video confession and the written statement. That is how all plea deals work.