Certainly this can be investigated And approved or disapproved. If this is not logically followed and cannot be properly investigated, this will be the last election in the United States. If someone is allowed to cheat this time, they will refine their cheating methods and be even better next time.
The dems have been cheating for quite some time and each time as soon as the election was over it was pretty much forgotten and as you suggest, they worked on refining their methods and plans. If ANYONE was prosecuted, it has been only lower level staffers who suffered a slap on the wrist.
This time their plan was so developed and coordinated that China Joe didn't even bother to pretend to campaign, knowing that any votes he needed would be "made up".