:I do not have any info about page edits on the subject of Impeachment. As I recall it, the thrust was something like "Wisniewski raised the issue of impeachment".  
 :The initial news coverage that I saw at the time, if I remember it correctly, had a reporter explicitly asking Wizniewski, "Is impeachment a possibility?" and Wisniewski answering something that was not a flat "No." If this was indeed the way impeachment was first raised, then I'd say the reporter raised it, not Wisniewski.