Congress has no law enforcement authority or jurisdiction. All Congress can do is make referrals to the DoJ. I would be surprised if there is any kind of action taken by DoJ against President Trump. To date I haven't heard anything except speculation, hearsay, and innuendo from the Jan. 6th committee. If they had actually found any real evidence that he broke a law I think we would have all heard about it by now. But that's not the point of the Jan. 6th hearings.