No matter what Trump is revealed to have done, it will be virtually impossible for him to be impeached and convicted, since that would require the agreement of a significant number of Republicans in the Senate, and they won't see it in their interests to remove him from office. Their own fortunes are too deeply enmeshed with his, and their constituents wouldn't stand for it. No matter how bad it gets, from where they stand, Trump being removed would be even worse. So Trump will stay in office, we'll have two more years of scandal and increasingly erratic behavior, and in 2020 we'll have another close election as Republican voters once again rally around their candidate, no matter how awful he might have proved himself to be.