So maybe Chief Justice Roberts was instinctively editing and “improving” the wording of the constitutional oath.

Ann Althouse links to Oaf of Office

She then adds her own perspective from the legal world:

But let’s remember that Barack Obama was the president of the Harvard Law Review — that is, the editor-in-chief — while John Roberts was the managing editor. For those of you who know law reviews, that means a lot. The managing editor is typically the person with the most intense interest in the details of grammar and usage. It would be cool if we could know that when Barack Obama paused after John Roberts moved the “faithfully” that he was thinking: I can see what you’re up to, you old managing editor, and I know you are wrong.