They just voted for an official impeachment inquiry. if it works as it should, witnesses will be called. Documents will be subpoenaed. Depositions, theoretically will be made.
The hitch, if the dems refuse to cooperate, no one will enforce it. No one will go to prison for refusing to cooperate. Old Joe runs the Justice Department. The FBI answers to Justice. If the order goes out to ignore the investigation, it will go nowhere.
If by some miracle, they do start cooperating with the investigation, it will be something new. It will also be a big surprise to many.
Also, if it does go forward, Old Joe’s done. Not only will it all come out in the open, but also the rats will start abandoning the sinking ship, and very rapidly. No one wants to be associated with all that corruption.