I don’t follow what you mean about future arrests of illegals?
If you mean removal hearings and the normal process that illegals go through- that is a separate system, immigration court with immigration judges. I don’t see how the sealed indictments could be connected to illegals.
What caught my eye was that here in Washington State, the majority of the sealed indictments are in Eastern WA, with a much smaller population than Western WA. Also, the State Capitol is in Western WA.
These sealed indictments may very well be sleuthing of illegals and getting documentation ready for an arrest of a known illegal? The numbers would certainly support that too, because of the huge number of illegals we have.