Impeachment is to good for him.
I can think of a number of other punishments that are suitable for him. I would even be willing to perform them on him personally. He is responsible for offences that rise to the level required, according to this.
“While there’s a high bar for what constitutes grounds for impeachment, an offense does not have to be indictable,” Turley, the liberal law professor, wrote. “Madison saw impeachment as ‘defending the community against the incapacity, negligence or perfidy of the chief magistrate.’ And the founders emphasized that impeachments were about what happened in the political arena: involving ‘political crimes and misdemeanors’ and resulting in ‘political punishments.”