[Campion]

The Constitution states that the punishment for impeachment shall not surpass removal.

No, it further states that it can include disqualification for Federal office. That's what this is about.

[frogjerk]

He is not in office. He cannot be convicted of impeachment (removal of office). Anything after he is out of office would be a bill of attainder which is clearly unconstitutional and has been adjudicated many many times.