Colorado supreme court ruled that they can take Trump off the ballot, now it looks like California is trying to do that as well. Meanwhile, republican states are threatening to retaliate in kind.
This seems unprecedented for US, does anybody know what happens in this scenario?
I'm sorry but you clearly don't know anything about some of the mechanisms available to US prosecutors.
A grand jury, for example, is conventionally convened in secret without a judge or defence to dispute any of the evidence provided.
The entire point of RICO laws for another example was to drastically reduce the evidentiary burden to prosecute high ranking organised crime figures.