Conservative groups influential with the Trump administration have pressed for the preemptive acts of clemency.
There’s a world of difference between a pardon issues to prevent malicious prosecution for non-crimew and one issued to people you’ve been instructing to commit crimes
Sorry I was tired, I was thinking of the Reagan amnesty, but that was an act of congress that he signed.
https://en.wikipedia.org/wiki/Immigration_Reform_and_Control_Act_of_1986